| 单词 | morphological |
| 例句 | Such cases can often be detected by analyzing the resulting morphological, genetic, or chromosomal differences between specimens of the same crop or domestic animal in different areas. Guns, Germs, and Steel: The Fates of Human Societies 1997-03-01T00:00:00Z The next Tally was a much more standard morphological model, with almond-shaped brown eyes, straight black hair with long bangs, the dark lips set to maximum fullness. Uglies 2005-02-08T00:00:00Z Quite the opposite—it was an expansive elaboration of a morphological correspondence theory that drove Carolee for so long: This looks like this. The Re-Enchantment of Carolee Schneemann 2019-03-13T04:00:00Z There are projects similar to previous ones," Herzog acknowledges, "but they are still experimentally interesting because they reveal other sides of morphological elements. Herzog & de Meuron: and now for our next trick … 2012-05-23T18:30:01Z The stability in personality traits is especially interesting in amphibians, as they undergo major morphological and ecological changes during metamorphosis from tadpole to frog. Poison dart frogs: Personality determines reproductive strategies 2023-11-09T05:00:00Z Beard left it to Rust to conduct the morphological analysis that tied Ekgmowechashala and its cousin Palaeohodites from China in a phylogenetic tree to establish their evolutionary relationships. Fossils tell tale of last primate to inhabit North America before humans 2023-11-06T05:00:00Z Inhibition of histone deacetylase leads to the reorganization of the actin cytoskeleton of dendritic cells, inducing morphological changes. Intestinal bacteria metabolite promotes capture of antigens by dendritic cells 2023-10-30T04:00:00Z When the database was originally developed, Casana had created morphological categories based on the different features evident in the imagery, which allows researchers to run queries. Cold War spy satellite imagery reveals Ancient Roman forts 2023-10-27T04:00:00Z The reason for the morphological limitation must be found in how bats emit their sound. Evolutionary chance made this bat a specialist hunter 2023-10-27T04:00:00Z Upon further inspection, the shells had morphological characteristics different to those of the already known species. Researchers discover a new species of larger benthic foraminifer from the Ryukyu Islands 2023-09-19T04:00:00Z "We collected a substantial amount of morphological data to create an evolutionary tree using a phylogenetic reconstruction software and algorithm," Rust said. Fossils tell tale of last primate to inhabit North America before humans 2023-11-06T05:00:00Z It seems to entail an ability of the regenerating cells to “read” the overall body plan: to take a peek at the whole, ask what's missing and adapt accordingly to preserve morphological integrity. Synthetic Morphology Lets Scientists Create New Life-Forms 2023-05-31T04:00:00Z Dinoflagellates exhibit extensive morphological diversity and can be photosynthetic, heterotrophic, or mixotrophic. Fundamentals of Biology 2015-01-01T00:00:00Z Many relationships that were based on morphological similarities are being replaced by new relationships based on genetic similarities. Concepts of Biology 2013-04-25T00:00:00Z Those specimens were a morphological match for the red agave worm. Scientists Have ID’d the Worm in Your Mescal 2023-03-08T05:00:00Z Then, they compared these features using a data matrix of 280 morphological characters and 82 groups of organisms, including Tyrannosaurus rex and Archaeopteryx sp., one of the earliest known birds. Missing link? A newly-discovered fossil looks like the halfway point between birds and dinosaurs 2023-01-06T05:00:00Z The mountain lizards’ shift in behavior sped up morphological change, Muñoz found. This biologist discovered that lizards and other organisms can influence their own evolution 2022-09-22T04:00:00Z In addition to their morphological similarity, molecular analyses have revealed similar sequence homologies in their DNA. Fundamentals of Biology 2015-01-01T00:00:00Z Protists that exhibit similar morphological features may have evolved analogous structures because of similar selective pressures—rather than because of recent common ancestry. Concepts of Biology 2013-04-25T00:00:00Z Using morphological and molecular data, scientists identify both homologous and analogous characteristics and genes. Biology for AP Courses 2022-06-09T00:00:00Z This loss of morphological diversity, she said, is closely linked to a loss of ecological roles that each species plays in the habitat it occupies. The Most Fascinating Birds Will Be the First to Go Extinct 2022-07-21T04:00:00Z While some species in the fossil record show little morphological change over time, others show gradual or punctuated changes, within which intermediate forms can be seen. An Introduction to Geology 2017-01-01T00:00:00Z The morphological flexibility and complexity of animal development afforded by the evolution of Hox control genes may have provided the necessary opportunities for increases in possible animal morphologies at the time of the Cambrian period. Fundamentals of Biology 2015-01-01T00:00:00Z They display two distinct morphological stages: vegetative and reproductive. Concepts of Biology 2013-04-25T00:00:00Z These adaptations can be morphological, physiological, and behavioral. Biology for AP Courses 2022-06-09T00:00:00Z These differences in gene expression ultimately dictate a cell’s unique morphological and physiological characteristics. Anatomy and Physiology 2013-06-19T00:00:00Z Mass-wasting events are classified by their type of movement and material, and they share common morphological surface features. An Introduction to Geology 2017-01-01T00:00:00Z Mollusks show a variety of morphological variations within the phylum. Fundamentals of Biology 2015-01-01T00:00:00Z “The bony and morphological adaptations of snakes always surprise me. It's amazing to see how these animals cope so well in the absence of limbs.” How Snakes Breathe while Crushing Prey 2022-06-30T04:00:00Z These organisms have morphological and physiological adaptations to retain water and release solutes into the environment. Biology for AP Courses 2022-06-09T00:00:00Z Microscopic observation reveals that the cells in a tissue share morphological features and are arranged in an orderly pattern that achieves the tissue’s functions. Anatomy and Physiology 2013-06-19T00:00:00Z Although biologists have created “molecular trees” that map out genetic similarities between species, they often completely contradict the morphological classifications that group organisms by how they look. Classifying animals by anatomy might not be best system, study says 2022-06-11T04:00:00Z Basal angiosperms, such as water lilies, are considered more primitive because they share morphological traits with both monocots and eudicots. Fundamentals of Biology 2015-01-01T00:00:00Z “All are consistent with the strong morphological adaptation of flying frogs for gliding behavior.” How Parachute Frogs Took to the Sky 2022-06-13T04:00:00Z It is the study of the physiological, morphological, and behavioral adaptations that enable individuals to live in specific habitats. Biology for AP Courses 2022-06-09T00:00:00Z Which morphological adaptations of neurons make them suitable for the transmission of nerve impulse? Anatomy and Physiology 2013-06-19T00:00:00Z Taken together, the evidence indicated that D. xiezhi shared some morphological characteristics with modern giraffes and was likely a grazer, perhaps feeding on a mix of leafy plants and grasses. Ancient Giraffe Relative Was Evolution’s Headbutting Champion, Perhaps Besting Dinosaurs 2022-06-02T04:00:00Z In some cases, prior results from morphological studies have been confirmed: for example, confirming Amborella trichopoda as the most primitive angiosperm known. Fundamentals of Biology 2015-01-01T00:00:00Z “Our work supports the value of morphological taxonomy,” says Rachel Welicky, a former postdoctoral researcher in Wood’s lab, now working as an assistant professor at Neumann University in Pennsylvania. The Scientists Fighting for Parasite Conservation 2022-05-18T04:00:00Z All organisms have likely descended from a single common ancestor, which is why so many organisms share anatomical, morphological, and molecular features. Biology for AP Courses 2022-06-09T00:00:00Z Clinicians often use two groupings in diagnosis: The kinetic approach focuses on evaluating the production, destruction, and removal of RBCs, whereas the morphological approach examines the RBCs themselves, paying particular emphasis to their size. Anatomy and Physiology 2013-06-19T00:00:00Z “Here, as in classical case studies, behavior may have strongly affected morphological evolution..., with extreme behavior leading to extreme morphological evolution in giraffoids,” they noted. Ancient Giraffe Relative Was Evolution’s Headbutting Champion, Perhaps Besting Dinosaurs 2022-06-02T04:00:00Z Annelids have a segmented body plan wherein the internal and external morphological features are repeated in each body segment. Fundamentals of Biology 2015-01-01T00:00:00Z “I think the paper is great in that it shows that morphological changes were taking place in Tyrannosaurus over the years that it existed,” Dr. Currie wrote in an email. They Want to Break T. Rex Into 3 Species. Other Paleontologists Aren’t Pleased. 2022-02-28T05:00:00Z Birds and reptiles have similar anatomical and morphological features. Biology for AP Courses 2022-06-09T00:00:00Z Their book described a biology class where 20 students discussed why morphological changes happen over time. Perspective | New Jersey’s governor blocked the growth of its best charter schools. Why? 2022-02-20T05:00:00Z Using a slew of morphological and genetic tests, scientists argue the island moth is substantially different enough from its mainland counterpart to merit its elevation to the species level, the Natural History Museum announced yesterday. New species has longest tongue of any insect 2021-10-01T04:00:00Z They display two distinct morphological stages: the vegetative and reproductive. Fundamentals of Biology 2015-01-01T00:00:00Z Male setters can struggle to grasp morphological difference — everything from height discrepancy to finger size, strength, power and flexibility. Charting the Course of Tokyo’s Climbing Walls 2021-08-02T04:00:00Z “I think that the genetic data in this case is more reliable than the morphological data,” said Bence Viola, a paleoanthropologist at the University of Toronto, who was not involved in the new study. Discovery of ‘Dragon Man’ Skull in China May Add Species to Human Family Tree 2021-06-25T04:00:00Z The students suggested these factors: natural selection, morphological mutations, punctuated equilibrium and allopatric speciation. Perspective | New Jersey’s governor blocked the growth of its best charter schools. Why? 2022-02-20T05:00:00Z But the researchers’ multiple lines of morphological and phylogenetic evidence offer strong support for their claims, according to Dr. Mah. These Brittle Stars Have Thousands of ‘Pig Snouts’ on Each Arm 2021-06-16T04:00:00Z Moreover, protists that exhibit similar morphological features may have evolved analogous structures because of similar selective pressures—rather than because of recent common ancestry. Fundamentals of Biology 2015-01-01T00:00:00Z The study revolves around “morphological computation,” the idea of a function being encoded in a body part instead of relying on the brain for instructions. Spider Legs Build Webs without the Brain’s Help 2021-02-05T05:00:00Z Our evolution now is more technological than morphological. Meave Leakey: 'Definitely, Africa is where it all began' 2020-11-21T05:00:00Z When you hold your smartphone in your hand, it's not just the morphological computation happening at the surface of your skin that becomes part of who you are. When objects become extensions of you 2020-11-16T05:00:00Z "It was confirmed by DNA and morphological characteristics that they are ticks not previously found in Rhode Island," the agency said. Two exotic tick species found in Rhode Island for the first time, officials say 2020-09-29T04:00:00Z The classification of eukaryotes is still in flux, and the six supergroups may be modified or replaced by a more appropriate hierarchy as genetic, morphological, and ecological data accumulate. Fundamentals of Biology 2015-01-01T00:00:00Z Roboticists are intrigued by morphological computation for the same reason: it saves computing power and time. Spider Legs Build Webs without the Brain’s Help 2021-02-05T05:00:00Z “Their rate of morphological change declines just as they are taking off as a radiation,” Goswami says. How Birds Evolved Their Incredible Diversity 2020-08-24T04:00:00Z "The most striking morphological character, which is always seen in Asiatic lions, and rarely in African lions, is a longitudinal fold of skin running along its belly," WWF India wrote on its website. Incredible photo shows 'epic showdown' between lioness and lion 2020-07-28T04:00:00Z "This is an example of what we call convergent evolution, when distantly related organisms develop similar morphological traits under similar environmental conditions." New Zealand 'monster penguins' had Northern Hemisphere doppelgangers, researchers say 2020-06-30T04:00:00Z With the advancement of molecular technologies, modern phylogenetics is now informed by genetic and molecular analyses, in addition to traditional morphological and fossil data. Fundamentals of Biology 2015-01-01T00:00:00Z “I find this work extremely interesting, telling us more about spiders and also about morphological computation,” says Cecilia Laschi, a bioroboticist now at the National University of Singapore, who was not involved in the study.* Spider Legs Build Webs without the Brain’s Help 2021-02-05T05:00:00Z They look set to revolutionize our understanding of the early diversification of tetrapods by filling in the wide morphological gap between very primitive ones, such as Acanthostega, and the more modern tetrapods of the Carboniferous. Jennifer Clack (1947–2020) 2020-04-21T04:00:00Z But if the authors’ interpretation is correct, she says, it’s evidence that the ecological and morphological diversity that we see in modern birds goes way back. This miniature skull belonged to a 2-gram dinosaur 2020-03-10T04:00:00Z The relative influences of these drivers were used to determine two key morphological metrics; namely, the protrusion of the delta into the sea and the shape of the river channel. Human activities have changed the shapes of river deltas 2020-01-21T05:00:00Z Animals are primarily classified according to morphological and developmental characteristics, such as a body plan. Fundamentals of Biology 2015-01-01T00:00:00Z "These old bones show us once again that the morphological variation seen in animals that are long extinct extends well beyond that of what is known in living animals," he said. Giant prehistoric caiman had extra hip bone 2019-12-17T05:00:00Z The team then looked for morphological, genetic and electrical differences between the specimens. New Electric Eel Is Most Shocking Yet 2019-09-10T04:00:00Z Just as inventive was his methodology, which he dubbed “morphological analysis”. Deciphering dark matter: the remarkable life of Fritz Zwicky 2019-09-02T04:00:00Z The paper also recommends resurveying historic skink locations to determine if currently unknown populations still exist, as well as collecting more morphological data and genetic material for analysis. "A Complete Enigma"—New Zealand Lizard Declared Extinct 130 Years After Only Sighting 2019-08-25T04:00:00Z Because of their contractility, they can change their morphological presentation in response to environmental cues. Fundamentals of Biology 2015-01-01T00:00:00Z "We are really excited about this discovery. Cambroraster clearly illustrates that predation was a big deal at that time with many kinds of surprising morphological adaptations." 500 million-year-old crab named after Han Solo's Millennium Falcon 2019-07-31T04:00:00Z Leonardo’s anatomical researches merged medieval physiology with the functional and morphological analyses of the classical physician Galen. Leonardo da Vinci’s laboratory: studies in flow 2019-07-15T04:00:00Z “We now have very clear evidence that gene flow between archaic groups and H. sapiens resulted in the transfer of identifiable morphological features,” they wrote in the new study. Archaic tooth gives some teeth to theory of interbreeding among different kinds of humans 2019-07-12T04:00:00Z Department of Agriculture specialist in Washington, D.C., who performed “careful” morphological measurements on the species, mostly on veins inside of the wing, before the discovery was confirmed. MSU professor, daughter uncover new insect species 2019-07-06T04:00:00Z Due to morphological similarities in their segmented body types, annelids and arthropods were once thought to be closely related. Fundamentals of Biology 2015-01-01T00:00:00Z DNA evidence shows it was a type of titi monkey with some unusual morphological features, not a wholly distinct branch of evolution. History of mystery monkey revealed 2018-11-12T05:00:00Z This lines up with morphological observations and ecological expectations, Dr. Luo said. Divide and Preserve: Reclassifying Tigers to Help Save Them From Extinction 2018-10-25T04:00:00Z Some researchers claim that the three subspecies deserve the status of species; therefore, we need to more genetic and morphological evidence to confirm that. World’s Biggest Pig Captured in Rare Video 2018-06-22T04:00:00Z Sexual dimorphism describes these physical — or morphological — differences between males and females of the same species. When evolution’s path leads to a dead end 2018-06-08T04:00:00Z The job falls to expert morphological taxonomists, who may spend years learning to recognize subtle characteristics that mark differences between species. Scientists are using DNA to study ocean life and reveal the hidden diversity of zooplankton 2018-06-08T04:00:00Z When the researchers looked at population structure within the three mammal species, there was clear genetic and morphological differentiation between populations in different regions of the island. Wallace’s enigma: how the island of Sulawesi continues to captivate biologists 2018-05-17T04:00:00Z Using creation science to demonstrate evolution 2: morphological continuity within Dinosauria. Book Review: God's Word or Human Reason? An Inside Perspective on Creationism 2018-03-31T04:00:00Z We also found that diversity in root morphological traits is greatest in the tropics, where plant diversity is highest and many ancestral phylogenetic groups are preserved. Evolutionary history resolves global organization of root functional traits 2018-02-20T05:00:00Z And this doesn’t apply just to morphological specialization – like sexual dimorphism – but specialization generally: in habitat, geographic range, maturation age, behavior, and environmental tolerance. When evolution’s path leads to a dead end 2018-06-08T04:00:00Z You need to have psychological and physiological and morphological characteristics. Mind over matter? Alex Hutchinson explains the role of the brain when it comes to the limits of human endurance 2018-02-18T05:00:00Z In this case, the rapid adaptation to silent singing is not a behavioural change but a morphological one – the crickets are still going through the motions of “singing”. 'Evolution in real time': silent crickets still singing for a mate 2018-02-14T05:00:00Z If one sees morphological evidence—evidence based on structures found on Mars—Rummel said that chemical analyses should then be performed to see if the results are consistent with the interpretation of the morphology. If We Found Life on Mars, How Would We Know? 2018-02-13T05:00:00Z Prasada, S. & Pinker, S. Generalisation of regular and irregular morphological patterns. Detecting evolutionary forces in language change 2017-10-31T04:00:00Z “We found what everyone hoped to find, that despite some significant morphological differences, these are indeed the same species,” said Mikheyev, who led the research published in the journal Current Biology. DNA confirms amazing Australian isle insect not extinct after all 2017-10-05T04:00:00Z Why do similar solutions — morphological, genetic and molecular — crop up again and again? Evolution: Parallel lives : Nature : Nature Research 2017-08-08T04:00:00Z Study targets are expected to include the role of genome duplication, the correlation between genomic and morphological changes, and how rates of evolution changed over time. Plant scientists plan massive effort to sequence 10,000 genomes 2017-07-27T04:00:00Z “Firmly resolving the relationships of birds continues to be a headache, whether using genetic or morphological data, or both,” she says. Tiny fossil reveals what happened to birds after dinosaurs went extinct 2017-07-10T04:00:00Z He hopes that it will help him to overcome a stumbling block with conventional morphological methods, many of which involve placing landmarks—points on structures that recur across species—on images. Massive Database of 182,000 Leaves Is Helping Predict Plant Family Trees 2017-07-08T04:00:00Z “We found what everyone hoped to find, that despite some significant morphological differences, these are indeed the same species,” said Mikheyev, who led the research published in the journal Current Biology. DNA confirms amazing Australian isle insect not extinct after all 2017-10-05T04:00:00Z Reevaluation of the largest published morphological data matrix for phylogenetic analysis of Paleozoic limbed vertebrates. The Microsaurs of Yore 2017-07-08T04:00:00Z He hopes that it will help him to overcome a stumbling block with conventional morphological methods, many of which involve placing landmarks — points on structures that recur across species — on images. Massive database of 182,000 leaves is helping predict plants' family trees 2017-07-06T04:00:00Z To calibrate this clock, the researchers also looked at 20 fossils of known age, which they placed at plausible points on the tree, based on the specimens’ morphological characteristics. Is the post-dinosaur world the Age of Frogs? 2017-07-06T04:00:00Z “The evidence that egg shape may be linked with morphological traits associated with flight ability across all birds opens a new chapter” in research, he said in an email. Ever wonder why eggs are shaped like eggs? Scientists say they’ve figured it out. 2017-06-22T04:00:00Z Homo naledi, as it was called, had some very primitive morphological features that meant it was likely very ancient indeed - possibly 2 million years ago, close to the root of our genus Homo. Homo naledi genome: Will we ever find this elusive key to human evolution? | Jennifer Raff 2017-05-23T04:00:00Z This was the concept transhumanists referred to as “morphological freedom” – the liberty to take any bodily form technology permits. ‘Your animal life is over. Machine life has begun.’ The road to immortality 2017-03-25T04:00:00Z They then examined them for morphological differences and sequenced about 2% of their DNA. Africa’s deadliest rapids give birth to new fish species 2017-02-21T05:00:00Z But if the sea floor has certain morphological characteristics, the country’s territory can be extended beyond that 200 nautical-mile limit, into an area called the extended continental shelf. Faultlines, black holes and glaciers: mapping uncharted territories 2017-02-07T05:00:00Z It was through careful morphological analysis that the team determined that the fossils belonged to a newly discovered species of tomatillo, within the nightshade family. Tomatillo Fossils, 52 Million Years Old, Are Discovered in Patagonia 2017-01-09T05:00:00Z Furthermore, morphological preservation of bone doesn’t always correspond with biomolecular preservation, and we can’t necessarily know in advance whether DNA will be present in a skeleton before we attempt to recover it. Homo naledi genome: Will we ever find this elusive key to human evolution? | Jennifer Raff 2017-05-23T04:00:00Z Homozygous tbx4-null mutants entirely lack pelvic fins without showing any other gross morphological defects. The seahorse genome and the evolution of its specialized morphology : Nature : Nature Research 2016-12-13T05:00:00Z This has resulted in an extraordinary morphological diversity, which is expressed in the range of colours, shapes and sizes of the fruits. The Coconut Could Be on the Verge of Collapse 2016-11-28T05:00:00Z Consistent with these results, morphological abnormalities were found in the nuclear envelope architecture in both cell-based and animal models of disease, as well as in the brains of people with C9 ALS–FTD. Decoding ALS: from genes to mechanism : Nature : Nature Research 2016-11-08T05:00:00Z “They’re taking a little bit, what they need. . . . They can even be beautiful. . . . They have these really amazing morphological structures that are really pretty.” Yes, there’s really a National Parasite Collection, and it’s getting a new life at the Smithsonian 2016-03-19T04:00:00Z “The frustrating thing is that these morphological features are not typical of any group,” said Victoria McCoy, a paleontologist and lead author on the paper. Solving the Tully Monster’s Cold Case 2016-03-16T04:00:00Z Altered expression patterns of these genes can potentially lead to altered morphological phenotypes. The seahorse genome and the evolution of its specialized morphology : Nature : Nature Research 2016-12-13T05:00:00Z Gene losses and gains associated with morphological and physiological processes shown in white within the dark-green box on the right. The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea : Nature : Nature Publishing Group 2016-01-26T05:00:00Z "The doctor encouraged me to do morphological ultrasound and told me that I am okay," she said. Back to its roots: how Zika may threaten Africa 2016-02-11T05:00:00Z He thinks its morphological and genetic divergence from its ancestors is sufficient to qualify. Greater than the sum of its parts 2015-10-29T04:00:00Z "Last year we discovered amphibious and toothless rats on the island too. There is a remarkable morphological evolution going on there." New 'hog-nosed rat' discovered in Indonesia - BBC News 2015-10-06T04:00:00Z Homozygous tbx4-null mutants entirely lack pelvic fins without showing any other gross morphological defects. The seahorse genome and the evolution of its specialized morphology : Nature : Nature Research 2016-12-13T05:00:00Z Gene losses and gains associated with morphological and physiological processes shown in white within the dark-green box on the right. The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea : Nature : Nature Publishing Group 2016-01-26T05:00:00Z Using robust datasets of mammalian teeth and skeletal characteristics, evolutionary rates and morphological disparity were quantified statistically in order to investigate this Jurassic diversification. Early Mammals Had An Explosive Evolutionary Burst During The Jurassic 2015-07-21T04:00:00Z These new findings provide some of the first morphological evidence for the grouping, the researchers say. Video: We found its head! 2015-06-24T04:00:00Z To begin with, he declared, both the theoretical and the morphological yardsticks by which the anatomists had differentiated them were entirely inappropriate. The Most Momentous Year in the History of Paleoanthropology 2015-06-12T04:00:00Z Using morphological, genetic, and biogeographical data, the agency determined that humpback whales are not a single global population, but are instead 14 distinct segments that rarely intermingle. Some humpback whales may lose endangered status 2015-04-20T04:00:00Z Yet that inspection process, called morphological analysis, is highly subjective, resting on opinions of individual embryologists and when they happen to look. New Test Lets Women Pick Their Best IVF Embryo 2015-04-16T04:00:00Z What was special about the Jurassic that lead to this increased rate of morphological diversification? Early Mammals Had An Explosive Evolutionary Burst During The Jurassic 2015-07-21T04:00:00Z Without genetic testing, however, the morphological comparisons are just speculative. This skull may provide a new link between Neanderthals and modern humans 2015-01-28T05:00:00Z “The morphological features of these skulls — big eyebrows, no chin — led to the idea that they were very different from us, and therefore inferior,” she says. ‘Such a Neanderthal.’ Turns out that’s almost a compliment. 2015-01-19T05:00:00Z Smugglers typically ship timber after it’s been milled, a process that obliterates morphological markers. Animal Traffic 2014-09-05T04:00:00Z Under a microscope the samples showed morphological similarities to two existing groups, jellyfish and comb jellies. Sea creatures add branch to tree of life 2014-09-02T04:00:00Z The fossil record exhibits for us what is possible for vertebrate organisms, both in niche occupation and in biomechanical and morphological adaptations to these niches. Dinosaurs Offer a Rich Field for Study of the Human Era 2014-06-12T04:00:00Z The new footage also shows more of the morphological structure of the show's vampires. New trailer for 'The Strain' shows del Toro's gruesome vampires in action 2014-05-29T04:00:00Z Structural MRI images taken before and after training identified a surprisingly large morphological change in the MoL-trained volunteers. Can a Mnemonic Slow Memory Loss with Age? 2014-03-20T21:17:18Z Convergence and divergence in the evolution of cat skulls: temporal and spatial patterns of morphological diversity. Mystery big cat skulls from the Peruvian Amazon not so mysterious anymore 2014-03-10T09:13:27Z "The taxonomical discrimination of the species was based mainly on the layer the human fossil was found instead of the morphological features," or shape and size of the bones, Benazzi told LiveScience. 'Neanderthal' Remains Actually Medieval Human 2013-12-30T23:45:00.402Z These results suggest that cryptic variation played a role in the evolution of eye loss in cavefish and provide the first evidence for HSP90 as a capacitor for morphological evolution in a natural setting. [Report] Cryptic Variation in Morphological Evolution: HSP90 as a Capacitor for Loss of Eyes in Cavefish 2013-12-12T19:26:55.319Z This may partially reflect the relative difficulty of morphological assessment compared with, for example, lesions in the colon. Selection and adaptation during metastatic cancer progression 2013-09-18T17:22:42.817Z Molecular phylogenetic analyses indicate extensive morphological convergence between the “yeti” and primates. Tales from the Cryptozoologicon: the Yeti 2013-08-04T16:45:03.477Z Overview of morphological evolution and radiation in the Lacertidae. It s high time you were told about Psammodromus 2013-07-31T14:15:03.503Z Redfield says the plan is to publish a revised morphological model in the next six months. Looking In The Sun's Rear-View Mirror: A New Map Of The Local Interstellar Medium 2013-07-29T03:42:00Z Previous phylogenetic investigations were based on maybe only 200 morphological characteristics. Bird ancestor reshuffles fossil pack 2013-05-29T17:12:01Z Hence, some of the earliest diagrams, unsurprisingly, contained our perception and morphological view of the world. The Science and Art of the Diagrams: Culturing Physics and Mathematics, Part 1 2013-03-22T12:45:00.207Z A few morphological differences might allow them to be distinguished from C. niloticus, including robust snout proportions and a low number of belly scales. Crocodiles of Africa, crocodiles of the Mediterranean, crocodiles of the Atlantic (crocodiles part VI) 2013-03-13T03:15:00.547Z Indeed, writes Duke University biologist Anne Yoder in a commentary, “O’Leary et al.’s study offers a level of sophistication and meticulous analysis of morphological and paleontological data that is unprecedented.” Found: Our Most Distant Ancestor -- Humanity's Great-Grand-Rat 2013-02-08T16:35:27Z While molecular and morphological characters have been recognised for both clades, Guayasamin . Glassfrogs: translucent skin, green bones, arm spines 2013-01-25T18:45:09.243Z In all forms of shock, blockade of digestive proteases with protease inhibitor attenuated entry of digestive enzymes into the wall of the intestine and subsequent autodigestion and morphological damage to the intestine, lung, and heart. [Research Articles] Pancreatic Digestive Enzyme Blockade in the Intestine Increases Survival After Experimental Shock 2013-01-23T19:55:07.367Z Together, these findings suggest a link between abnormal cortical FA and disturbances of neuronal morphological development. [Research Articles] Prenatal Cerebral Ischemia Disrupts MRI-Defined Cortical Microstructure Through Disturbances in Neuronal Arborization 2013-01-16T20:25:08.363Z Face shape and other morphological traits are partially based in genetics, but also partially to environmental factors like hormone levels in the womb during development. People With Brown Eyes Appear More Trustworthy, But That's Not The Whole Story 2013-01-10T01:15:03.233Z Changizi says that the results provide behavioral evidence "that pruney fingers are rain treads", which are consistent with his own team's morphological findings. Why Do Our Fingers and Toes Wrinkle During a Bath? 2013-01-09T20:45:00.847Z Moreover, the catecholaminesecreting neurons in the brain are strikingly similar to the sympathetic neurons in the peripheral ganglia in both their morphological and biochemical properties. The Nerve-Growth Factor: A New Tool for Manipulating Neurons 2013-01-03T11:15:00.190Z We analysed four other sensilla, chosen for their morphological diversity and their functional specificities. Non-synaptic inhibition between grouped neurons in an olfactory circuit 2012-12-11T21:22:02.810Z We touched on behaviours and morphological features that might integrate these insects into colony life, but for the most part, information is scarce. The Bizarre, Beetle-Biased World of Social Insect Exploitation 2012-12-10T14:45:00.213Z Although being able to crush bone is a big benefit for hyenas evolutionarily, it’s a huge morphological handicap for cubs. How aggressive hyena moms give their kids a boost 2012-11-29T15:45:09.033Z Also known as the the Chocoan blunt-headed vine snake, it was distinguished from its relatives through an analysis of its DNA, morphological features, and colour patterns. Imantodes chocoensis: New species of skinny, bug-eyed snake discovered in Ecuador 2012-11-28T15:15:03.547Z The two whales, a 5.3-meter-long female and 3.5-meter-long juvenile male that were originally mistaken for Gray's beaked whales, were exhumed for a morphological analysis that helped confirm distinctions from other species. Rare Whales Sighted Live in New Zealand 2012-11-06T18:30:00Z "Some individuals exploit the investment made by other individuals in reproduction, sometimes leading to great behavioural and/or morphological differences between individuals using the two tactics," he said. Size matters for 'sex cheat' frogs 2012-10-15T06:48:27Z But for some reason this morphological approach has been overlooked relative to the traditionally pursued protein-drug binding viewpoint. Let's all find out how meth works: Crowdfunding a novel scientific paradigm 2012-10-05T17:15:18.400Z A morphological analysis revealed that Lesula has larger eyes that sit more closely together in the skull, and larger incisors, both on the upper and lower jaw. New species of African monkey discovered 2012-09-15T17:45:00.197Z In fact it’s worth wondering if toxins are actually more widespread, and if they might be present in species that lack morphological structures that function in parasite control. The war on parasites: the pigeon's eye view, the oviraptorosaur's eye view 2012-08-23T14:45:02.890Z “Our morphological results show that the adhesive is produced by large gland cells and all of the adhesive components appeared to be produced together in the same cell,” she explains. Getting a Grip on the Goose Barnacle 2012-07-31T14:45:05.853Z Not only are they invertebrates, but in some of the eusocial species, there appear to be the beginnings of distinct morphological or behavioral roles. Scientist at Work Blog: Watchful Shrimp, Defending Their Territory 2012-07-20T19:21:28Z Now researchers like Perlstein and Sulzer are emphasizing the morphological paradigm and asking us to consider the physical, more global effects of drugs on the cell’s structural machinery along with their interaction with specific proteins. Let's all find out how meth works: Crowdfunding a novel scientific paradigm 2012-10-05T17:15:18.400Z Eventually, we manage to make it home and begin the long process of picking shrimp, identifying the species under the microscope, and preserving the specimens for genetic, morphological, and histological analysis. Scientist at Work Blog: Snapping Shrimps and Hidden Sponges 2012-07-18T17:35:06Z Integration of morphological data sets for phylogenetic analysis of Amniota: the importance of integumentary characters and increased taxonomic sampling. Why the world has to ignore ReptileEvolution.com 2012-07-04T11:45:05.397Z This family tree is backed up by reams of genomic and morphological data, and is well accepted by the palaeontological community. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z Are crocodiles really monophyletic?–Evidence for subdivisions from sequence and morphological data. The once far and wide Siamese crocodile 2012-06-15T18:15:07.963Z From a scientific sense, the biggest value of the project is in taking an alternative approach to understanding psychotropic drug action by looking at large-scale morphological effects on cell structure and function. Let's all find out how meth works: Crowdfunding a novel scientific paradigm 2012-10-05T17:15:18.400Z Tests of turtle phylogeny: Molecular, morphological, and paleontological approaches. Terrifying sex organs of male turtles 2012-06-09T14:45:00.217Z A highly simplified version of the tetrapod family tree as consistently recovered by morphological and molecular studies, and also supported by embryology, biochemistry, behaviour and other lines of evidence. Why the world has to ignore ReptileEvolution.com 2012-07-04T11:45:05.397Z In addition, these small molecules are often expressed in specific tissues and help to regulate the development of certain organs, so they could explain the origin of morphological innovations over geological time. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z Crocodilia, Crocodylia, Crocodyliformes, Crocodylomorpha – why most people remain confused In recent years it has become better appreciated among the interested public that the crocodilian fossil record includes an impressive amount of morphological and behavioural diversity. Dissecting a crocodile 2012-05-24T17:15:07.103Z Antennae, compound eyes, electroreceptors, and other sensory systems, despite their morphological and functional diversity, share in common the basic feature of neurological control. Machine Counterpart: Nature's New Creatures 2012-05-08T16:45:00.240Z One small vein, called the oblique vein of Marshall, runs down into it across the posterior surface of the auricle, from below the left lower pulmonary vein, and is of morphological interest. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z While operationally useful, this definition may be just as arbitrary as using diagnostic morphological characters. Species Concepts 2012-04-20T14:15:03.823Z However, these general morphological similarities might represent convergence rather than genuine affinity. Eld's deer: endangered, persisting in fragmented populations, and morphologically weird... but it wasn't always so 2012-04-19T15:45:14.640Z The next morphological category may be spoken of as unipolar symmetry. The Contemporary Review, Volume 36, October 1879 2012-04-18T02:00:17.060Z The physiological individual, characterized by definiteness and independence of function, in distinction from the morphological individual or morphon. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z They are still isolated and enough time has elapsed so that only vestiges of morphological intergradation exist between centralis and these eastern forms. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Total evidence could include morphological character information, genetic characters, behavioral traits and more. Species Concepts 2012-04-20T14:15:03.823Z To the chemical synthesis, from which protoplasm results, is added, through mechanical integration, morphological synthesis, to whose special form inherited characteristics are related as elements. A Review of the Systems of Ethics Founded on the Theory of Evolution 2012-03-17T02:01:00.033Z The latter has proven the morphological identity of the various kinds of bacteria, although it cannot be denied that the apparent similarity may mask a yet unknown difference. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Under the vague term “double” many very different morphological changes are included. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7 "Horticulture" to "Hudson Bay" 2012-03-04T03:00:13.390Z He saw, moreover, that mere morphological changes matter little since the temper of a people alters so slowly. Herbert Spencer 2012-02-29T03:00:20.773Z Species concepts were first defined based on morphological traits. Species Concepts 2012-04-20T14:15:03.823Z Molecular results have been less encouraging than morphological studies, and the analysis by Geisler et al. shows it as one of the earliest diverging delphinids. Grampus griseus joins the globicephalines 2012-02-27T21:15:05.413Z In answer to the argument from these, it is asserted by Koch and his supporters that "there is no anatomical or morphological characteristic of tubercle," its only sufficient test being its inoculability. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z One of his most fruitful discoveries was the true meaning of infection as a morphological and physiological process. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 10 "David, St" to "Demidov" 2012-02-17T03:00:33.923Z None the less he helped to effect for psychology the transition from a static and morphological mode of interpretation to one which is distinctively kinetic, physiological, and historical. Herbert Spencer 2012-02-29T03:00:20.773Z But whereas specialization of the protoplasm for movement resulted in a very obvious morphological complexity, specialization for secretion results in molecular complexity, and only rarely and indirectly results in morphological differentiation. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z The application of the morphological method to the Crustacea may perhaps be dated from the work of J. C. Fabricius towards the end of the 18th century. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z If the morphological appearances of fatty infiltration and of fatty degeneration were constant, there would obviously be little or no difficulty in determining the nature of the process manifested by the presence of fat. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Initial measurements confirmed morphological differences between the new mouse lemur and other known species, and genetics further clarified the split. Green Blog: Meet Madagascar's New Lemur 2012-01-09T12:38:18Z Interaction of these environmental factors could result in genetic fixation of morphological characters through natural selection. Geographic Variation in the North American Cyprinid Fish, Hybopsis gracilis 2011-12-29T03:00:21.553Z This universal morphological differentiation of the cell-protoplasm is accompanied by corresponding chemical differences, and is the expression of a physiological division of labour of fundamental importance. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z Its morphological nature, however, is clearly shown by its development. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z There, I am excited to find several nuances in plumage and morphological traits across biogeographical regions in Mexico. Scientist at Work Blog: Quail Hybridization in Mexico 2011-12-28T22:50:17Z Definitive interpretation of fossil activity patterns based on these osteological characteristics may not be possible except in cases of morphological extremes. [Technical Comment] Comment on ?Nocturnality in Dinosaurs Inferred from Scleral Ring and Orbit Morphology? 2011-12-22T19:25:32.243Z Geographic variations of some physiological and morphological characters in certain freshwater fishes. Geographic Variation in the North American Cyprinid Fish, Hybopsis gracilis 2011-12-29T03:00:21.553Z In southern British Columbia the morphological differences are not so marked as farther south along the Pacific Coast. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The morphological nature of this system is unknown. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z The history of the genus dates back to the early late Pliocene, but morphological change since then has been slight insofar as can be judged from lower jaws. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Sigmodon hispidus solus is an insular differentiate that probably reached the barrier island from the adjacent mainland of Tamaulipas, where its apparent closest relative, as judged by morphological similarity, now occurs. Vertebrates from the Barrier Island of Tamaulipas, M?xico 2011-11-15T03:00:17.973Z Broadly speaking, these families make their first appearance in time in the order given above, and show a progressive morphological evolution along certain special lines. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Because of the morphological resemblances mentioned above, it seems likely to me that S. cinereus and the vagrans-ornatus-veraepacis-palustris complex had a common ancestor in early Pleistocene time. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Although the excretory function of these has been demonstrated by physiological methods, however, their morphological relations are not clear. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Such similarities of crania between Calomys and Baiomys may reflect convergence, but the total of internal and external morphological characters shared, I think reflects true relationships. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Our small samples of birds and reptiles from the island show no detectable morphological differentiation from adjacent populations. Vertebrates from the Barrier Island of Tamaulipas, M?xico 2011-11-15T03:00:17.973Z Lineage III appears restricted to the Himalayas and lineages V is hypothesized to be a different species of Rattus, showing consistent morphological differences from species that it coexists with. The Biogeography of Rats and Their Quest for Global Domination 2011-11-09T23:15:02.907Z The slight degree of morphological divergence is such that intergrades might be expected to occur. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The morphological interpretation of histologic sections forms the basis of diagnosis and prognostication for cancer. [Research Articles] Systematic Analysis of Breast Cancer Morphology Uncovers Stromal Features Associated with Survival 2011-11-09T19:55:07.037Z The morphological difference between the extinct B. minimus and the living B. musculus is not great, and musculus seems to be the product of the B. sawrockensis-B. minimus line of development. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The genus is readily divided into two species-groups on morphological characters; this division is supported by the breeding calls. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z Likewise, lineage VI is composed two previously described Rattus species that are distributed similarly to the black rat and show consistent morphological differences but are generally not found in human settlements. The Biogeography of Rats and Their Quest for Global Domination 2011-11-09T23:15:02.907Z The four are here afforded species rank since morphological similarity and allopatry are not sufficient grounds for the assumption of genetic exchange. A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope 2011-10-23T02:00:22.253Z In the diagnosis of carcinomas, pathologists perform a semiquantitative analysis of a small set of morphological features to determine the cancer’s histologic grade. [Research Articles] Systematic Analysis of Breast Cancer Morphology Uncovers Stromal Features Associated with Survival 2011-11-09T19:55:07.037Z Therefore, populations of pygmy mice occurring to the south in central M�xico might be expected to maintain a relatively high degree of heterozygosity in morphological and behavioral characters. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Again, why should the physiological change be thus associated with every conceivable variety of morphological change? Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z The geographical distributions and morphological characteristics of these four genera suggest that they are more closely related to one another than with any other hylid genera. A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus 2011-10-04T02:00:15.227Z I consider pallidus to be specifically distinct from modestus because there is no evidence of genetic exchange, and there is no overlap in the distinguishing morphological features. A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope 2011-10-23T02:00:22.253Z In spite of its relatively high degree of morphological specialization, T. ornata is remarkably versatile in regard to habitat requirements. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z The two living species, B. musculus and B. taylori, are seemingly derived from a common ancestor that in morphological structure was intermediate between B. minimus and B. musculus. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Thus the association between the physiological peculiarity and the morphological divergence is explained by the simple hypothesis, that the former has acted as a necessary condition to the occurrence of the latter. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z The two conceptions which may now be said to animate the theory of geography are the genetic, which depends upon processes of origin, and the morphological, which depends on facts of form and distribution. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" 2011-09-19T02:00:10.473Z Both populations agree in other morphological characters; therefore, they are here treated as geographic variants. A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope 2011-10-23T02:00:22.253Z Until the end of the 20th century the molecular basis for morphological, physiological, biochemical and behavioural variation in laboratory mice remained largely obscure. Mouse genomic variation and its effect on phenotypes and gene regulation 2011-09-14T17:21:52.063Z Where the two species are allopatric, these same morphological characters differ least. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z It does not, however, deny that in some cases the morphological may be the prior change; but it strenuously denies that this must be so in all cases. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z In the absence of actual stone tools to confirm Au. sediba’s manipulative skills, the morphological traits exhibited by the fossilized hands strongly suggest the potential exists. Pieces of the Human Evolutionary Puzzle: Who Was Australopithecus sediba? 2011-09-09T23:15:05.257Z There are relatively few clear-cut morphological differences among the fourteen species now assigned to Syrrhophus. A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope 2011-10-23T02:00:22.253Z But before or during the process of fertilisation, changes take place, the result of which is that the fusing nuclei are exactly alike in morphological character. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z Species of the genus Baiomys can be divided into two morphological groups. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z In this case our theory regards any morphological changes which afterwards supervene as due to the independent variability which will sooner or later arise under the physiological isolation thus secured. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z Adaptive relicts of morphological nature have been many times documented, but characteristics associated with seasonality and timing schedules have not. The Breeding Birds of Kansas 2011-08-27T02:00:24.797Z This is apparently owing to the facts that too much has been attempted in the definition, and that differences arise according as we aim at a morphological or a physiological definition. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z From a morphological point of view, one may confidently regard the cell as an individual; but it must be borne in mind that an abstraction has been made. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z Baiomys seems to have undergone little basic evolutionary and morphological change since Late Pliocene time. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z But to whatever causes the subsequent morphological changes may be due, the point to notice is that they are as a general rule, consequent upon the physiological change. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z They could also compare its morphological features to extant species of Equisetum today—which can also be found in mineral- and geothermal-spring environments—and make inferences about the fossil species' ecology. Newly Discovered Plant Fossil Reveals More Than Age 2011-05-06T16:37:00Z Previously to Hansen’s work the only way of differentiating 278 yeasts was by studying morphological differences with the aid of the microscope. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 3 "Fenton, Edward" to "Finistere" 2011-03-14T03:01:00.580Z The size, structure, detailed morphological characteristics and chemical compositions of the meteorite filaments are not consistent with known species of minerals. Dot Earth: NASA Scientist Sees Signs of Life in Meteorites 2011-03-05T21:13:39Z The small number of known species of pygmy mice suggests their conservatism in elaboration of morphological characters. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The morphological characteristics of the three forms are sufficiently distinct for them to be designated as species by a good many writers. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z Before releasing our newly discovered species, we took morphological measurements and weights as well as photographs as further lines of evidence. Cheerleader for Science: a chat with Mireya Mayor, author of "Pink Boots and the Machete" 2011-03-01T15:15:05.433Z Each of the external morphological characters used in the systematic treatment of Ptychohyla, as well as the nature of the tongue, is discussed below. A Review of the Middle American Tree Frogs of the Genus Ptychohyla 2011-02-28T03:00:32.093Z Researchers also hope to delve deeper into the ants' DNA to better understand the vast morphological differences that A. cephalotes exhibits. Fungus-farming leaf-cutter ant's genome sequenced 2011-02-11T22:15:00.267Z The combination of morphological and behavioral characters in the living pygmy mice warrants generic status for them. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Because of this morphological similarity, 2003 was both the first and last time that Brandt's bats were officially identified in Ireland. Deforestation may have killed off rare bat in Ireland 2011-02-09T22:15:05.257Z So traditional morphological analysis, such as comparing patterns of pigmentation and numbers of fin rays, is conducted to solidify their findings. Smithsonian Scientists Discover 7 New Species of Fish 2011-02-08T17:02:00Z Composition.—Five species, two of which are made up of two subspecies, arranged in two groups of species on the basis of morphological characters of adults and tadpoles and on the basis of breeding calls. A Review of the Middle American Tree Frogs of the Genus Ptychohyla 2011-02-28T03:00:32.093Z The morphological anterior end of the central nerve tube is the point of the infundibulum which is in contact with the pituitary body. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Traditionally, you would do a formal morphological description of the specimen. Dog is wolf in jackal's clothing 2011-01-28T18:36:51Z The Basque is an agglutinative idiom, and must be placed, in a morphological point of view, between the Finnic family, which is simply incorporating, and the North American incorporating and polysynthetic families. Basque Legends With an Essay on the Basque Language 2011-01-11T03:00:33.670Z As Norell notes, any Triassic find is exciting but the condition of these discoveries, he says, is especially exhilarating. also helps to trace the evolution of some morphological features back to the very first dinosaurs. Newly Discovered T. Rex Relative Fleshes Out Early Dino Evolution 2011-01-10T07:45:48.450Z Further study has revealed additional resemblance in morphological and behavioral details. A Review of the Middle American Tree Frogs of the Genus Ptychohyla 2011-02-28T03:00:32.093Z The foundation of our present morphological and biological knowledge of the order was well laid by the admirable researches of Th�lohan in 1895. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z It is to be noted that often no absolute line of demarcation can be drawn in regard to these regions, their definitions being rather convenient than morphological. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z It consequently finds a place in the second great morphological linguistic group, between the Finnic and the North American family of languages. Basque Legends With an Essay on the Basque Language 2011-01-11T03:00:33.670Z Budd and Pandolfi conducted their study by analyzing the relationship between geography and evolutionary innovation in a complex of Caribbean reef corals where morphological and genetic data match on species differences. Caribbean Coral Reef Protection Efforts Miss the Mark 2010-06-21T13:02:00Z The only noticeable morphological difference between the subspecies, except in the size of the tympanum, is the shape of the snout. Descriptions of New Hylid Frogs From Mexico and Central America This paper reports the results of studies involving morphological and biochemical features that I consider less sensitive to external environmental factors than are features which have been studied previously. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study And the student will readily understand that by leaf in its largest or morphological sense, the botanist means the organ which occupies the place of a leaf, whatever be its form or its function. The Elements of Botany For Beginners and For Schools We can, therefore, speak of the head ganglia of Arthropods as a brain, and in doing so must remember that we define by physiological evidence rather than by morphological. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" He explained that he relied upon the morphological characters of the individual animal instead of upon the morphological characters of a population of animals. Comments on the Taxonomy and Geographic Distribution of Some North American Marsupials, Insectivores and Carnivores Consequently, on morphological grounds, the two specimens from Pengra can be assigned to T. m. mazama almost as well as to T. m. nasicus. Comments on the Taxonomy and Geographic Distribution of Some North American Rodents Both causes acting together—the phylogenetic configuration of the idioplasm and the successive morphological stages of development of the individual conditioned on it—necessarily result in the ontogeny being the repetition of the phylogeny. A Mechanico-Physiological Theory of Organic Evolution Certain variations from this normal condition which sometimes occur do not invalidate this morphological conception. The Elements of Botany For Beginners and For Schools Their morphological interest is referred to in the section below on Comparative Anatomy. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" Toby," he says, as I light another cigarette, and settle myself to hear the disclosure, "recent morphological inquiry has a curious bearing on this point. Punch, or the London Charivari, Vol. 98, June 21 1890 In short, in arranging muralis as a subspecies of Thomomys bottae, we are influenced, not by the demonstration of intergradation, but by the degree of morphological differentiation of the population and the probable reasons therefor. Comments on the Taxonomy and Geographic Distribution of Some North American Rodents The morphological phenomena which find their application in taxonomy, belong exclusively to phylogeny. A Mechanico-Physiological Theory of Organic Evolution But, however this may be, in the mind of a morphological botanist, 243. The Elements of Botany For Beginners and For Schools It is clear that this form of "morphological adaptation" is a highly specialized one, which can only be the result of a long process of evolutionary development. The Chemistry of Plant Life It is possible, however, that those oviducts belong to a separate morphological category, more comparable to the dorsal pores and to abdominal pores in some fishes. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" The functional significance of this sheathing arrangement is as obscure as its morphological origin. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Some morphological features of the same kind and degree that differentiate subspecies in one place may not vary geographically in another place. Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas A simple conception of the morphological relation of an anther to a leaf is given in Fig. The Elements of Botany For Beginners and For Schools You will see this more clearly after we have examined the principles of what I call the morphological classification of human speech. Lectures on The Science of Language The foresight indicated by the Manifesto was not chronological, it was not a prophecy nor a promise, but a morphological prevision. Essays on the Materialistic Conception of History Passionately he seized on Herder's idea of evolution, and it was towards establishing it that all his endeavours, botanical, zoological, morphological and osteological, were directed. Naturalism And Religion The distinctive combination of morphological, physiological, chromosomal, and behavioral characteristics is strongly suggestive that these frogs represent an early phyletic divergence within the Hylidae. The Genera of Phyllomedusine Frogs (Anura Hylidae) Unfortunately no other specimens are available from the foothill zone south of the Arkansas River where morphological intergradation and ecological transition between fallax and scopulorum might reasonably be expected to occur. A New Subspecies of Wood Rat (Neotoma mexicana) from Colorado But this concession must not be understood as an admission that the members of this class start from different sources, and that they are held together, not by genealogical affinity, but by morphological similarity only. Lectures on The Science of Language If the hypha is the morphological test of a fungus, then it is plain that the slime-moulds are not fungi. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species The acorn in its growth follows the type of the parent oak, repeating all its morphological and physiological characters down to the most intimate detail. Naturalism And Religion It was then found to be completely changed in its morphological characters, the rods being elongated, slender, more or less beaded, and entirely of the human type. Special Report on Diseases of Cattle Although information concerning the evolutionary trends of American apatemyids has been published, no data on the morphological variation in a population are available in the literature. Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan If you consider the character of our morphological classification, you will see that this classification, differing thereby from the genealogical, must be applicable to all languages. Lectures on The Science of Language It is, therefore, a morphological system, and rests rather upon the appearances of parts and organs than upon the offices which such parts and organs fulfil. The Contemporary Review, Volume 36, September 1879 Haacke declares both these to be unsatisfactory, and replaces them by morphological formative principles. Naturalism And Religion Smith mentioned also certain morphological and cultural differences in bacilli from these two sources, and in the location and histology of the lesions in cattle produced by such bacilli. Special Report on Diseases of Cattle An adequate basis for evaluating the significance of the morphological differences between the P4's of Princeton no. Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan But in their morphological nature these phrases are still inflectional. Lectures on The Science of Language This signifies that, as embryos, we repeat in an abridged form the series of types or morphological stages through which has passed the series of our animal ancestors, from the primitive cell to man. The Sexual Question A Scientific, psychological, hygienic and sociological study Even instincts and mental endowments are so interpreted, since there must be corresponding morphological variations of the fine structure of the nervous organ, and instinctive actions are then “explained” as the functions of these. Naturalism And Religion By comparing these cultures with a newly isolated virulent culture of bovine tuberculosis, there were found among them 2 cultures from children which were identical in their cultural and morphological characters with the bovine bacillus. Special Report on Diseases of Cattle And now we approach the last and chief series of morphological phenomena which must be ascribed to the direct action of environing matters and forces. Essays: Scientific, Political, & Speculative, Vol. I At the end of our morphological classification a problem presents itself, which we might have declined to enter upon if we had confined ourselves to a genealogical classification. Lectures on The Science of Language By the use of better methods the red blood corpuscles which have taken on the iodine stain stand out, without having undergone any morphological change. Histology of the Blood Normal and Pathological Although geographically intermediate specimens are lacking, the morphological differences between the two kinds of animals are of the degree and kind that separate subspecies, rather than species. Comments on the Taxonomy and Geographic Distribution of North American Microtines One culture of human bacilli which had morphological and cultural peculiarities similar to those of the bovine bacillus, and which produced only local lesions in cattle, was passed through a series of five cats. Special Report on Diseases of Cattle Except as noted below, we are unable to detect significant morphological differences in the populations sampled and believe that pooling of the measurements is justifiable in this case. A New Subspecies of Microtus montanus from Montana and Comments on Microtus canicaudus Miller A morphological survey of group formation in any society discloses the fact that there are lateral as well as vertical divisions in the social structure. Introduction to the Science of Sociology By the notching of their margins they appear to eyes practised in the judgment of morphological conditions, in a stage almost of dissolution, and as well-pronounced degeneration forms. Histology of the Blood Normal and Pathological Parasites may cause morphological or structural changes in the tissues of their hosts. Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases Far from decreasing in virulence, however, as might be expected from its morphological appearance, this bacillus had so increased in its pathogenic activity that it produced generalized tuberculosis in a cow. Special Report on Diseases of Cattle If some varieties are missing prepare a second stock dish from other colonies on plate 3, and repeat the process until each morphological form or tinctorial variety has been secured in subculture. d. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Even when used in conjunction with purely morphological characters, these physiological properties are too variable to aid us in the discrimination of species and genera, and are apt to break down at critical periods. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" This is proved by the complete agreement in general morphological character, in staining properties of the protoplasm and nucleus, and from the absence of granulation. Histology of the Blood Normal and Pathological Applications of these techniques in NLP include: dictionaries, morphological analysis, part-of-speech tagging, syntactic analysis, and speech processing. Multilingualism on the Web On either line, thousands and thousands of causes have combined to determine the morphological and functional evolution. Creative Evolution The purity of the cultivation; this can only be determined when gross morphological differences exist between the organisms present. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. In truth, Virchow does me greatly too much honour when he designates as my "personal crotchet" an idea which for the last ten years has been the most precious common possession of all morphological science. Freedom in Science and Teaching. from the German of Ernst Haeckel It consequently follows from clinical and morphological researches, as well as from the observations on inflammatory processes, that the lymphocytes are in no way connected with the polynuclear leucocytes. Histology of the Blood Normal and Pathological When we examine a simple cell, we find we can distinguish morphological parts. The World's Greatest Books — Volume 15 — Science So that, if so, we now have, within the limits of a single organism, evidence of a whole series of morphological changes in the past history of its species. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions Thus the average man would be a man so perfectly constructed that he has no morphological predisposition to disease of the organs. Spontaneous Activity in Education A quite new light was thrown on this, as on every other morphological question, as soon as Darwin in 1859 had once more put into our hands the torch of the doctrine of descent. Freedom in Science and Teaching. from the German of Ernst Haeckel According to the class of animal they shew different tinctorial and morphological properties. Histology of the Blood Normal and Pathological Thus confusion was avoided, each object being found in the pigeon-hole appropriated to it and to its fellows of similar morphological or physiological character. Fragments of science, V. 1-2 Here, then, we have both morphological and physiological evidence pointing to the possession of gills by the ancestors of the land salamander. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions These feathers are different from any which I have been able to find attached to the bodies of birds, and are thus identified from morphological rather than from other reasons. Archeological Expedition to Arizona in 1895 Seventeenth Annual Report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution, 1895-1896, Government Printing Office, Washington, 1898, pages 519-744 At the same time they set in the clearest light the immeasurable value of the theory of descent in the causal explanation of the most difficult morphological problems. Freedom in Science and Teaching. from the German of Ernst Haeckel Ehrlich regarded these as typical examples of a relative acceleration of the morphological ripening of the cells, as compared with the development of the granules. Histology of the Blood Normal and Pathological Most of these variations are mentioned under the head of the particular morphological change of which they are illustrations. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The similarities, therefore, which it is the function of comparative embryology to reveal are the similarities of type or morphological plan: not similarities of specific detail. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions Histoblast: the morphological unit or cell characteristic of a particular tissue. Explanation of Terms Used in Entomology The paddle of the porpoise and the wing of the bat are there used as instances of morphological resemblance. The Foundations of the Origin of Species Two Essays written in 1842 and 1844 The morphological character of leucocytosis is certainly not simple, and we must sharply separate various groups, according to the kind of leucocyte increased. Histology of the Blood Normal and Pathological The most singular instances of morphological identity are those relating to the sexual organs. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants In quite a different domain from that of morphological relationship, namely in the physiological study of the blood, results have recently been gained which are of the highest importance to the doctrine of descent. Evolution in Modern Thought But Theophrastus shows by many examples that he is capable of following out morphological homologies. The Legacy of Greece Essays By: Gilbert Murray, W. R. Inge, J. Burnet, Sir T. L. Heath, D'arcy W. Thompson, Charles Singer, R. W. Livingston, A. Toynbee, A. E. Zimmern, Percy Gardner, Sir Reginald Blomfield This bacillus has all the staining, morphological, and even growth characteristics of the tubercle bacillus except that it produces only local irritation and little nodular masses, if injected into animals. Preventable Diseases The morphological changes of leukæmic blood under the influence of infectious diseases can only be explained from the standpoint of the emigration theory. Histology of the Blood Normal and Pathological Inferior ovary.—Is the pistil always foliar in its morphological nature, or is it, in some cases, as Schleiden taught, formed from the axis alone? Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The four types dealt with in this book are extremely convenient for developing the methods of comparative anatomy and morphological embryology. Text Book of Biology, Part 1: Vertebrata He would have been well advised to follow Rodriguez' model and transcribe this item as xiny with the specification that consonant plus y indicates a morphological juncture. Diego Collado's Grammar of the Japanese Language The changes, which the individual organism experiences during its life in its material, physiological and morphological organization, are in part transmitted to its progeny. At the Deathbed of Darwinism A Series of Papers Hence, in organisms, as in salts, morphological identity may be due to a community of causal connexion, rather than community of descent. On the Genesis of Species De Candolle gave a special impetus to morphology in general by giving in his adhesion to the morphological hypotheses of Goethe. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The cognate languages—chiefly Hebrew and Arabic—formed a help towards determining the meaning of the words read and an explanation of the morphological features they presented. The Religion of Babylonia and Assyria First, as in the Arte, c is changed to q before o and u, when the sequence occurs at a morphological juncture; e.g., ioqu 'well,' and iq� 'I shall go.' Diego Collado's Grammar of the Japanese Language Baer did not attach any special morphological significance to the peritoneal lining of the body cavity, as is done in more modern forms of the germ-layer theory. Form and Function A Contribution to the History of Animal Morphology But, in order that these data should be of value, the observed anomalies and defects of the cerebral functions ought to be capable of being referred to careful morphological investigations of the cretin brain. The Mind of the Child, Part II The Development of the Intellect, International Education Series Edited By William T. Harris, Volume IX. Teratology as a guide to the solution of morphological problems has been especially disparaged in contrast with organogeny, but unfairly so. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The instincts and habits of the lower animals by which they obtain food, migrate, and perpetuate their kind, are in obedience to particular congenital impressions, and correspond to definite anatomical and morphological relations. The Myths of the New World A Treatise on the Symbolism and Mythology of the Red Race of America It is often practically convenient to consider the organism as presenting two different aspects—a structural or morphological one, and a functional or physiological—and biologists often call themselves accordingly morphologists or physiologists. Biology A lecture delivered at Columbia University in the series on Science, Philosophy and Art November 20, 1907 Groups of these morphological elements formed morphological divisions, such as the vertebral segments of the head with their highly developed neural arches, or the segments of the neck with their undeveloped hæmal arches. Form and Function A Contribution to the History of Animal Morphology Here is an action not prompted by the environment, but by the morphological needs of the tree, and it illustrates how different is its unity from the unity of a mere machine. The Breath of Life Already teratology has done much towards showing the erroneous nature of many morphological statements that still pass current in our text-books, though their fallacy has been demonstrated again and again. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants It is impossible to define by any precise characters the morphological range of the present species. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The morphological feature of plants is this cellulose coat; of animals, its absence; the physiological peculiarity of plants, this manufacturing power; of animals, the want of it. Scientific American Supplement, No. 508, September 26, 1885 But some of his homologies showed morphological insight, e.g., his comparison of the "first jaws" of Arachnids to antennæ, because they were placed above the upper lip. Form and Function A Contribution to the History of Animal Morphology Certain bone affections, such as osteomalacia or osteoporosis, are in the main, responsible for distortions and morphological changes of bone, causing lameness, permanent blemish and even resulting in death of the affected animal. Lameness of the Horse Veterinary Practitioners' Series, No. 1 Phyllody in inflorescence of Conifers.—This demands passing notice by reason of the interest attaching to the morphological construction of these plants. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Chemical resemblance between groups, as indicating morphological relations, has been well shown. Scientific American Supplement, No. 623, December 10, 1887 As one listened to him one felt that comparative anatomy was worthy of the devotion of a life, and that to solve a morphological problem was as fine a thing as to win a battle. Thomas Henry Huxley A Character Sketch He appreciated the morphological idea of the serial repetition of parts, and gave it accurate formulation. Form and Function A Contribution to the History of Animal Morphology Classification, which is merely a convenient summary expression of morphological facts, has undergone a corresponding improvement. The Advance of Science in the Last Half-Century It is of interest, as it sometimes serves to illustrate the morphological nature of the pistil. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants This complexity of chemical composition of saponin is admirably adapted for the nutrition of the plant, and it is associated with the corresponding complexity of the morphological elements of the plant's organs. Scientific American Supplement, No. 623, December 10, 1887 Conservatism: among orientals, 284; of woman, morphological and physiological, 18, 19, 51. Sex and Society The histological development of the two kinds was different, but this difference was not sufficient to establish a morphological distinction between them, a distinction in their anatomical Bedeutung. Form and Function A Contribution to the History of Animal Morphology All the morphological characters of animals and plants are the results of the mode of multiplication, growth, and structural metamorphosis of these cells, considered as morphological units. The Advance of Science in the Last Half-Century Special morphology.—Under this heading brief reference may be made to some of the organs whose morphological nature has been, and still is, much contested. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The Thuja occidentalis39 in the juvenescent and adult form, offers an example where morphological and chemical differences go hand in hand. Scientific American Supplement, No. 623, December 10, 1887 Professor Yaeger's theory explains further to us that other great mystery of Nature—the transmission from parent to offspring of the morphological speciality. Five Years of Theosophy His collection of facts is a very heterogeneous one; he mingles morphological with physiological analogies, and makes the most far-fetched comparisons between organs 092belonging to animals of the most diverse groups. Form and Function A Contribution to the History of Animal Morphology But the great diversity of these abnormal cases as shown in the examples cited above suggests the use of great caution in formulating definite morphological theories upon them. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 But this matter loses much of its importance if the morphological identity of axis and leaf-organ be conceded. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Species may be based on form, morphological species; or they may be based on reproductive functions, physiological species. Q. E. D., or New Light on the Doctrine of Creation This is tantamount to saying that it is possible to group them into morphological types. Language An Introduction to the Study of Speech The cell was for Schwann not a morphological concept at all, but a physiological; the cell was a dynamical, not a statical unit. Form and Function A Contribution to the History of Animal Morphology Languages, on the other hand, readily fall into a natural arrangement, like that of which other vital products are susceptible, especially when viewed from their morphological side…. Critiques and Addresses A biological laboratory, with excellent arrangements for physiological and morphological investigations. The History of University Education in Maryland In order to provide tools for users, the text is processed by a morphological analyzer, and the results are stored in a database. Library of Congress Workshop on Etexts Sometimes we may suspect that the resemblance is due to a mere convergence, that a similar morphological feature has grown up independently in unrelated languages. Language An Introduction to the Study of Speech As a matter of fact Goethe's morphological views are neither very clearly expressed nor very consistent. Form and Function A Contribution to the History of Animal Morphology But a Medusa is surely not the result of the coalescence of as many organisms as it presents morphological segments. Critiques and Addresses The fact is that purely morphological observations are but preliminary steps to the histological and physiological study of the brain, and of the body as a whole. Criminal Sociology The doctrine of "chemical units" is universally conceded, and that of "morphological units" almost as universally claimed. Life: Its True Genesis I cannot but suspect that many of the more significant distributions of morphological similarities are to be explained as just such vestiges. Language An Introduction to the Study of Speech He wavers between the purely formal or morphological interpretation of the principle of connections and the functional. Form and Function A Contribution to the History of Animal Morphology But the Xiphosura have such close morphological relations with the Arachnida, and especially with the oldest known Arachnidan, Scorpio, that I cannot doubt the existence of a genetic connection between the two groups. Critiques and Addresses These were in addition to the normal morphological elements found in the excretions. Scientific American Supplement, No. 384, May 12, 1883 His morphological cells, as well as plastide particles, are among these living organisms, as is conclusively shown by his own experiments. Life: Its True Genesis We also know that words may be diffused no less freely than cultural elements, that sounds also may be “borrowed,” and that even morphological elements may be taken over. Language An Introduction to the Study of Speech But as it was he remained at his morphological standpoint. Form and Function A Contribution to the History of Animal Morphology For one of my temperament, this philosophic and morphological mode of embracing and expounding literary history has a strong attraction. Amiel's Journal II.—The morphological relations of these organisms have to be investigated, and their specific nature in the different morbid processes has to be determined. Scientific American Supplement, No. 303, October 22, 1881 Different chemical solutions give rise to different morphological cells, as differently constituted soils produce different vegetal growths. Life: Its True Genesis The distinction between the nominative and accusative was nibbled away by phonetic processes and morphological levelings until only certain pronouns retained distinctive subjective and objective forms. Language An Introduction to the Study of Speech The segmentation which soon becomes so marked, particularly in the muscle layer, is also due to a process of morphological differentiation. Form and Function A Contribution to the History of Animal Morphology To resume We find it caused by morphological Changes of the cortex cells. Toward the Gulf Before doing so it seems desirable to look somewhat closer into the morphological features of the problem. Species and Varieties, Their Origin by Mutation He has no "primordial formless fog" to fall back upon as has Professor Tyndall, nor can he imagine anything beyond the least of possible conceptions in a chemical, morphological, or vital unit. Life: Its True Genesis I have already pointed out in passing that English has taken over a certain number of morphological elements from French. Language An Introduction to the Study of Speech His best piece of purely morphological work was his theory of the metamorphosis of plants. Form and Function A Contribution to the History of Animal Morphology Living matter is characterised by its innate tendency to exhibit a definite series of the morphological and physiological phenomena which constitute organisation and life. Science & Education Monstrosities are often considered as accidents, and rightfully so, at least as long as they are considered from a morphological point of view. Species and Varieties, Their Origin by Mutation His unit of value is a morphological cell, a derivative organism rather than a primary vital unit; and all organisms are, as we have before said, destructible by heat. Life: Its True Genesis Such examples as these are hardly true evidences of a morphological influence exerted by one language on another. Language An Introduction to the Study of Speech The best example of Geoffroy's insistence upon the priority of structure to function, and so of his purely morphological attitude, is perhaps his interpretation, already alluded to, of the appendages of Articulates. Form and Function A Contribution to the History of Animal Morphology Next in order of extent to our morphological knowledge of these organisms is that of their behavior, mental life, and social relations. The Mental Life of Monkeys and Apes A Study of Ideational Behavior As a matter of fact, it is possible to draw such a sharp morphological distinction—a distinction based on anatomic structure—between the fore and hind extremity. The Evolution of Man — Volume 2 It is this vital unit that assimilates or aggregates protoplasmic matter into the morphological cell, or the initial organism in a vital structure, or an approach towards structural form. Life: Its True Genesis It is important to realize the continuous, self-contained morphological development of English and the very modest extent to which its fundamental build has been affected by influences from without. Language An Introduction to the Study of Speech But Dugès' main contribution to morphological method was his conception of the living organism as a colony of lesser units, which were themselves real "organisms." Form and Function A Contribution to the History of Animal Morphology But when one turns to the morphological sciences of anatomy, histology, embryology, and pathology, one discovers great gaps, where knowledge might reasonably be expected. The Mental Life of Monkeys and Apes A Study of Ideational Behavior On the ground of careful comparative anatomical research, Huxley proved that in all morphological respects the differences between the highest and lowest apes are greater than the corresponding differences between the highest apes and man. The Evolution of Man — Volume 2 And he also admits that morphological cells, when once formed, continue to grow by their own individual power or inherent tendency. Life: Its True Genesis It is now a strictly morphological process, not in the least a mechanical phonetic adjustment. Language An Introduction to the Study of Speech The morphological distinction continued however to be recognised, particularly by the embryologists. Form and Function A Contribution to the History of Animal Morphology These morphological facts are in perfect harmony with the familiar physiological truth that the child inherits from both parents, and that on the average they are equally distributed. The Evolution of Man — Volume 1 He showed convincingly that the ideas of hand and foot had been wrongly defined, and had been improperly based on physiological instead of morphological grounds. The Evolution of Man — Volume 2 If vital units have only a hypothetical existence, then chemical units, statical units, and morphological units, should fall into the same categories of judgment. Life: Its True Genesis These particular variations won through because they so beautifully allowed the general phonetic drift to take its course without unsettling the morphological contours of the language. Language An Introduction to the Study of Speech He took no interest in the morphological problems that filled the minds of Cuvier and Geoffroy; he had indeed no feeling at all for morphology. Form and Function A Contribution to the History of Animal Morphology But the milk-gland of the mammal has a great morphological interest from another point of view. The Evolution of Man — Volume 1 He first opened out the phylogenetic path which here, as in all morphological questions, leads most confidently to the goal. The Evolution of Man — Volume 2 The chief fault that we have to find with the London University professor is that he confounds a morphological cell with a morphological unit, and insists upon drawing unwarrantable conclusions therefrom. Life: Its True Genesis The general drift seizes upon those individual sound variations that help to preserve the morphological balance or to lead to the new balance that the language is striving for. Language An Introduction to the Study of Speech The true morphological distinction between them was their development in different skeleton-forming layers. Form and Function A Contribution to the History of Animal Morphology They have, however, only a physiological, not a morphological, importance; they have no direct influence on the formation of the foetus. The Evolution of Man — Volume 1 From the morphological point of view both the vegetal and the animal Protists were simple organisms, individualities of the first order, or plastids. The Evolution of Man — Volume 2 And this is true of all living organisms from the lowest morphological cell, in the ichthyologic world, to the highest and lordliest conifer that grows. Life: Its True Genesis Yet certain morphological distributions are too specific in character to be so lightly dismissed. Language An Introduction to the Study of Speech Reichert objected to the distinction drawn by Kölliker, and denied that there was either a histological or a morphological difference between membrane and cartilage bones. Form and Function A Contribution to the History of Animal Morphology At this stage man is a higher vertebrate, but shows no essential morphological difference from the embryos of the mammals, the birds, the reptiles, etc. The Evolution of Man — Volume 1 We shall see presently how this conclusion is justified in the present condition of morphological science. The Evolution of Man — Volume 2 They differ only from "morphological cells," in the definitional language employed by different theorists, and lack the all-essential accuracy of distinction necessary to scientific classification. Life: Its True Genesis They will still have in common certain fundamental morphological features, but it will be difficult to know how to evaluate them. Language An Introduction to the Study of Speech We have already discussed the morphological system built up by Richard Owen in the late 'forties, a system transcendental in its main lines. Form and Function A Contribution to the History of Animal Morphology The proof of it lies in the whole morphological literature of the last three decades. The Evolution of Man — Volume 1 The two structures can be compared from the physiological point of view, and so are ANALOGOUS, as they have the same function; but not from the morphological point of view, and are therefore not HOMOLOGOUS. The Evolution of Man — Volume 2 But every morphological cell is conceded to be an organism, whether it lie within or beyond the microscopic limit. Life: Its True Genesis So long as such direct historical testimony as we have gives us no really convincing examples of profound morphological influence by diffusion, we shall do well not to put too much reliance in diffusion theories. Language An Introduction to the Study of Speech Within the nervous system there are separate organs which stand to one another in a definite morphological and functional relationship. Form and Function A Contribution to the History of Animal Morphology These morphological studies led Goethe on to research into the formation and modification of organic structures which we must count as the first germ of the science of evolution. The Evolution of Man — Volume 1 I hold, with Lamarck and Darwin, that the hereditary transmission of acquired characters is one of the most important phenomena in biology, and is proved by thousands of morphological and physiological experiences. The Evolution of Man — Volume 2 —Molluscan morphology. —completion of Spirula memoir. —early morphological ideas confirmed: publication. Life and Letters of Thomas Henry Huxley — Volume 3 These analogical adjustments are practically always symptoms of the general morphological drift of the language. Language An Introduction to the Study of Speech He laid stress, it is true, rather on the physiological than on the morphological resemblance. Form and Function A Contribution to the History of Animal Morphology The possibility of living without oxygen, in the case of ordinary moulds, is connected with certain morphological modifications which are more marked in proportion as this faculty is itself more developed. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) We cannot insist too often or too strongly on the great morphological significance of these remarkable organs, which are completely useless from the physiological point of view. The Evolution of Man — Volume 2 In the plant, just as in man, the morphological polarity coincides with the biological. Man or Matter Every linguist knows that phonetic change is frequently followed by morphological rearrangements, but he is apt to assume that morphology exercises little or no influence on the course of phonetic history. Language An Introduction to the Study of Speech A Cuverian by training, his lack of morphological sense threw him into the ranks of the transcendentalists, to whom perhaps he belonged by nature. Form and Function A Contribution to the History of Animal Morphology Little is known, however, of the efficiency of this species as a fly-catcher; but its conformation has a morphological interest, leading up, as it does, to the Californian type of pitcher presently to be mentioned. Darwiniana; Essays and Reviews Pertaining to Darwinism Other malformations of various kinds are not infrequently found in the human external sexual organs, and some of them have a great morphological interest. The Evolution of Man — Volume 2 It is also obvious to me that the morphological series ought to contain examples of all the extinct types in their proper places. Life and Letters of Thomas Henry Huxley — Volume 2 There is concealed in it a particular set of esthetic factors—phonetic, rhythmic, symbolic, morphological—which it does not completely share with any other language. Language An Introduction to the Study of Speech Through morphological differentiation the various parts of the fundamental organs become specialised, through 117unequal growth, first into the primitive organs and then into the functional organs of the body. Form and Function A Contribution to the History of Animal Morphology He HAS shown that selective breeding is a vera causa for morphological species; he has not yet shown it a vera causa for physiological species. Life and Letters of Thomas Henry Huxley — Volume 1 The whole of the results of recent morphological research compel us irresistibly to recognise the biogenetic law and its far-reaching consequences. The Evolution of Man — Volume 2 The morphological side of the subject is interesting enough to the scientist, but to him alone. The Story of Germ Life They are generally due to the disturbing influence of morphological groupings or to special psychological reasons which inhibit the normal progress of the phonetic drift. Language An Introduction to the Study of Speech These elements which von Baer distinguishes are morphological units, as he himself points out, contrasting them with organs which are not usually units in a morphological sense. Form and Function A Contribution to the History of Animal Morphology Up to his appointment at the School of Mines, Huxley's work had been almost entirely morphological, dealing with the Invertebrates. Life and Letters of Thomas Henry Huxley — Volume 1 Nageli himself urges that plants offer many morphological differences, which from being of no service cannot have been selected, and which he accounts for by an innate principle of progressive development. More Letters of Charles Darwin — Volume 2 A short consideration of certain morphological facts will therefore be necessary at the start. The Story of Germ Life Hence they are likely to affect a whole morphological group here—this does not matter—, only part of a morphological group there—and this may be disturbing. Language An Introduction to the Study of Speech It is, however, the third and subsequent Scholia which must here particularly occupy our attention, for it is in these that von Baer comes to grips with morphological problems. Form and Function A Contribution to the History of Animal Morphology Those who thought about the matter at all took Owen's osteological extravaganzas for the ne plus ultra of morphological speculation. Life and Letters of Thomas Henry Huxley — Volume 1 Is this not very curious, and opposed to the morphological idea that a flower is a condensed continuous spire of leaves? More Letters of Charles Darwin — Volume 2 Thus at present the different species are distinguished rather by their physiological than their morphological characters. The Story of Germ Life These parallelisms in drift may operate in the phonetic as well as in the morphological sphere, or they may affect both at the same time. Language An Introduction to the Study of Speech The three processes of differentiation are "primary differentiation" or layer-formation, "histological differentiation" within the layers, and the "morphological differentiation" of primitive organs. Form and Function A Contribution to the History of Animal Morphology Such a sentence as "so purely dependent is the incipient plant on the specific morphological tendency" does not sound to my ears like good mother-English—it wants translating. More Letters of Charles Darwin — Volume 1 The various meanings given to the term morphological makes another difficulty. More Letters of Charles Darwin — Volume 2 He was chiefly distinguished among men of birth for general obscenity of speech and morphological inventiveness in blasphemy. The Historical Nights' Entertainment First Series The functional need for distinctions explains morphological aspects; the pragmatic context suggests how the shift from the scale of one-to-one direct interaction to one-to-many by the intermediary of language takes place. The Civilization of Illiteracy The fundamental organs, however, have at no time actually the form of tubes; they exist as tubes only ideally, for morphological and histological differentiation go on concurrently with the process of primary differentiation. Form and Function A Contribution to the History of Animal Morphology The most important point, as it seems to me, in the pamphlet is that on the morphological characters of plants, and I find I could not answer this without going into much detail. More Letters of Charles Darwin — Volume 1 It is to me delightful to see what appears a mere morphological character found to be of use. More Letters of Charles Darwin — Volume 2 We thus see that with plants many morphological changes may be attributed to the laws of growth and the inter-action of parts, independently of natural selection. The Origin of Species by means of Natural Selection, 6th Edition The pollen-tube method ultimately prevailed, becoming a constant "morphological character," for no other reason than because, under the new conditions, it provided a more perfect mechanism for the accomplishment of the act of fertilisation. Darwin and Modern Science Note that Lamarck's Échelle is in no way a morphological one, and was not intended to be such. Form and Function A Contribution to the History of Animal Morphology Saint-Hilaire often explains morphological differences as due to differences in vigour. More Letters of Charles Darwin — Volume 1 It is in the second part that the paragraphs on morphological matters occur. Form and Function A Contribution to the History of Animal Morphology So again, in formerly discussing certain morphological characters which are not functionally important, we have seen that they are often of the highest service in classification. The Origin of Species by means of Natural Selection, 6th Edition The action of the environment produces certain morphological changes in the organism. Darwin and Modern Science But he did not formulate the distinction in any strictly morphological way. Form and Function A Contribution to the History of Animal Morphology But since this is what modern morphological criticism in great measure aims at doing, it cannot be altogether profitless to follow this method to its logical conclusions. Form and Function A Contribution to the History of Animal Morphology The quotation is from Bateson's paper of 1886, and it is symptomatic of the change which was soon to come over morphological thought. Form and Function A Contribution to the History of Animal Morphology This was probably due partly to the obscurity and confusion of his thought, partly to his lack of sympathy with the biological thought of his day, which was preponderatingly morphological. Form and Function A Contribution to the History of Animal Morphology One of these points is the supposed distinction between morphological and adaptive characters, on which Nageli, in particular, laid so much stress. Darwin and Modern Science It was, perhaps, his lack of morphological training and experience that led him to disregard the problems of form, or at least to realise very insufficiently their difficulty. Form and Function A Contribution to the History of Animal Morphology For an understanding of correlation a knowledge of functions, and of the functional relations of the organism to its environment, is clearly indispensable. 265Gegenbaur's morphological system was out-and-out evolutionary. Form and Function A Contribution to the History of Animal Morphology The distinction between the primary or primordial, and the investing or secondary bones is from the morphological standpoint sharp and definite. Form and Function A Contribution to the History of Animal Morphology These are merely chance resemblances of no morphological importance. Form and Function A Contribution to the History of Animal Morphology This is a sufficiently liberal concession; Nageli, however, went much further when he said: "I do not know among plants a morphological modification which can be explained on utilitarian principles." Darwin and Modern Science We have here to consider his interpretation of morphological facts and its relation to the current morphology of his time. Form and Function A Contribution to the History of Animal Morphology In general he shows himself, in his comparisons, lacking in morphological insight. Form and Function A Contribution to the History of Animal Morphology Though Goethe's morphological views were lacking in definiteness he hit upon one or two ideas which proved useful. Form and Function A Contribution to the History of Animal Morphology With the great exception of Aristotle, the philosophers of Greece and Rome made little contribution to morphological theory. Form and Function A Contribution to the History of Animal Morphology We may next take the seed itself—the very type of a morphological character. Darwin and Modern Science Towards the beginning of the 19th century the idea was taken up eagerly by the transcendental school and by them given, in their theories of the 215"one animal," a more morphological turn. Form and Function A Contribution to the History of Animal Morphology The main currents of morphological thought are to my mind three—the functional or synthetic, the formal or transcendental, and the materialistic or disintegrative. Form and Function A Contribution to the History of Animal Morphology Speaking generally, however, we find in Aristotle no purely morphological concepts. Form and Function A Contribution to the History of Animal Morphology This book is not intended to be a full or detailed history of animal morphology: a complete account is given neither of morphological discoveries nor of morphological theories. Form and Function A Contribution to the History of Animal Morphology The only case known to me in which budding by the adult is accompanied by morphological features similar to those displayed by embryos is furnished by the budding of the medusiform spore-sacs of hydrozoon polyps. Darwin and Modern Science Since the instinctive reactions of animals are as hereditary as their morphological character, a discussion of experiments on the physico-chemical character of the instinctive reactions of animals should not be entirely omitted from this sketch. Darwin and Modern Science These examples may suffice to indicate that the arrangement of definite groups of cells and the morphological effects resulting therefrom may be determined by forces lying outside the cells. Darwin and Modern Science Each organism transmits to its descendants a part of the morphological and physiological qualities that it has received from its parents and ancestors. Darwin and Modern Science Here, then, we have seeds arising casually, as it were, at different points among plants which otherwise retain all the characters of their cryptogamic fellows; the seed is not yet a morphological character of importance. Darwin and Modern Science |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。