| 单词 | recombination |
| 例句 | The more contemporary term is recombination—the ability to generate combinations of combinations of genes. The Gene 2016-06-02T00:00:00Z The similarities between genomes must explain the likeness between parents and their children, and mutations and recombination might explain their differences. The Gene 2016-06-02T00:00:00Z The third R of the physiology of genes is a word that lies outside common human vocabulary, but is essential to the survival of our species: recombination—the ability to generate new combinations of genes. The Gene 2016-06-02T00:00:00Z And during the recombination of DNA, the strategy of interposing base against base is deployed yet again to restore damaged DNA. The Gene 2016-06-02T00:00:00Z To understand recombination, we might, yet again, begin with Mendel and Darwin. The Gene 2016-06-02T00:00:00Z The other main reason for autocatalysis is that new technologies and materials make it possible to generate still other new technologies by recombination. Guns, Germs, and Steel: The Fates of Human Societies 1997-03-01T00:00:00Z Sequels to Iron Man and Captain America are due next year, with the whole gang coming a bit after that, in an endless separating and recombination of the central team. Marvel's The Avengers: A Superhero Roundup That's Almost Super 2012-04-25T12:25:56Z Assemblage — the reuse and recombination of existing forms — was essential to Rodin’s process, though one rarely sees it so clearly laid out. Exhibit review: In Virginia, a Rodin show changes how we see the sculptor 2015-11-20T05:00:00Z Lack of originality is not a crime, though, and children’s literature is an art of recombination perhaps more than of invention. Review: ‘Mary and the Witch’s Flower’ Chases a Girl and Her Broomstick 2018-01-18T05:00:00Z As a good evolutionist, he can say, “The church was just the ‘lucky one’ that bumbled across an effective recombination of supernatural beliefs and practices.” Why Are We in the West So Weird? A Theory 2020-09-12T04:00:00Z It is propelled by no urgency and no dramatic stakes other than the recombination of two commercially successful films into a hybrid sequel. “Glass,” Reviewed: M. Night Shyamalan’s Unsatisfying Obsession with Superheroes 2019-01-19T05:00:00Z Humanity, expressed as unique genetic formulation, yearns to be reborn in endless succession of recombination. I can’t turn off my thoughts 2013-02-01T01:00:00Z The Internet’s output tells us that the band was never building a thesis against its forebearers; tinkerers like them are composing by recombination. Review: The Serene, Funk-Drenched Sound of the Internet’s “Hive Mind” 2018-07-26T04:00:00Z Culture is always an ebb and flow of fragmentations and recombinations, of encounters both violent and peaceful. How Hokusai’s Art Crashed Over the Modern World 2023-06-22T04:00:00Z The adaptation perfectly captures her understanding of making music as an act of free association, recombination, collaboration, and, more than anything else, extreme openness to the idea that any noise has potential. Missy Elliott’s “Supa Dupa Fly” Came From The Future 2018-11-20T05:00:00Z In an ideal world, each person owns his or her own genetic code, and whenever a child gets created through the recombination of DNA from two people, that requires the active consent of both parties. Condoms are so hundred years ago: Why we need more ways for men to control their fertility 2015-07-01T04:00:00Z Like a gambling machine with a limited number of options for recombination, the story was going to eventually be spat out as a win for somebody. In the beginning, there was fan fiction: from the four gospels to Fifty Shades 2012-08-13T16:34:00Z Traditional Norwegian food is famously bland, with infinite recombinations of fish, potatoes, flour and milk. North of Nordic: A Young Chef Invents ‘Neo-Fjordic’ Cuisine 2017-07-18T04:00:00Z "Antimicrobial resistance can occur when microorganisms acquire genetic information, either by mutation, recombination or transfer of antibiotic resistance genes from the bacterial gene pool," said Professor Erica Donner from the University of South Australia. How to slow the spread of deadly 'superbugs' 2023-10-23T04:00:00Z "We have a way of probing the short time window before this recombination occurs, and that allowed us to see that a fluid of Hubbard excitons is transiently stabilized." Physicists find evidence for magnetically bound excitons 2023-10-05T04:00:00Z And that happens through processes that we would call computation—the shuffling and combination and recombination of information through algorithms that are themselves written in that same information. To Find Life in the Universe, Find the Computation 2023-06-22T04:00:00Z Genetic recombination is known to take place between the different nuclei. Fundamentals of Biology 2015-01-01T00:00:00Z The genetic marker tends to be inherited with the gene of interest, and one measure of distance between them is the recombination frequency during meiosis. Concepts of Biology 2013-04-25T00:00:00Z T. Rowe Price, a major News Corp. shareholder, told the New York Times that the proposed recombination would depress the value of the company, which was already trading below what it was worth. Rupert Murdoch withdraws bid to recombine two halves of his empire 2023-01-24T05:00:00Z The original XBB was the first variant known to have emerged through a process called recombination. No, vaccines aren’t making new COVID-19 variants worse 2023-01-08T05:00:00Z This mixing, called recombination, happens fairly often among coronaviruses. Health Experts Warily Eye XBB.1.5, the Latest Omicron Subvariant 2023-01-07T05:00:00Z The move comes as the two companies under the Murdoch family’s control — News Corp. and Fox Corp. — are exploring a recombination. Emma Tucker to replace Matt Murray as editor of the Wall Street Journal 2022-12-12T05:00:00Z Genetic maps provide an outline for the location of genes within a genome, and they estimate the distance between genes and genetic markers on the basis of the recombination frequency during meiosis. Concepts of Biology 2013-04-25T00:00:00Z But the viruses are known to swap chunks of RNA with each other, a process called recombination, so each section has its own evolutionary history. Chances of Finding COVID-Causing Virus Ancestor ‘Almost Nil,’ Virologists Say 2022-11-11T05:00:00Z Separation of the molten sodium and chlorine prevents recombination. Chemistry 2019-02-14T00:00:00Z Linkage analysis involves studying the recombination frequency between any two genes. Biology for AP Courses 2022-06-09T00:00:00Z The sorting and recombination of genes in meiosis increases genetic variation. Miller & Levine Biology 2018-01-01T00:00:00Z Binary fission does not provide an opportunity for genetic recombination, but prokaryotes can alter their genetic makeup in three ways. Concepts of Biology 2013-04-25T00:00:00Z But researchers say that comparing whole-genome sequences ignores the role of recombination in virus evolution. Chances of Finding COVID-Causing Virus Ancestor ‘Almost Nil,’ Virologists Say 2022-11-11T05:00:00Z It is necessary to keep the two gases separated to prevent their explosive recombination to reform hydrogen fluoride. Chemistry 2019-02-14T00:00:00Z The greater the distance between two genes, the higher the chance that a recombination event will occur between them, and the higher the recombination frequency between them. Biology for AP Courses 2022-06-09T00:00:00Z Enzymes normally responsible for DNA repair and recombination may help to insert the foreign DNA into the chromosomes of the cell. Miller & Levine Biology 2018-01-01T00:00:00Z To understand this, let us consider the biological basis of gene linkage and recombination. Concepts of Biology 2013-04-25T00:00:00Z To account for recombination, the researchers compared 18 bat and pangolin viruses closely related to SARS-CoV-2, and spliced them into 27 segments. Chances of Finding COVID-Causing Virus Ancestor ‘Almost Nil,’ Virologists Say 2022-11-11T05:00:00Z Genetic recombination—the combining of gene segments from two different pathogens—is an efficient form of immune evasion. Anatomy and Physiology 2013-06-19T00:00:00Z Because genetic maps rely completely on the natural process of recombination, mapping is affected by natural increases or decreases in the level of recombination in any given area of the genome. Biology for AP Courses 2022-06-09T00:00:00Z As if mutation wasn’t enough of a problem, the virus has another trick up its sleeve: recombination. Virus mutations aren’t slowing down. New omicron subvariant proves it. 2022-05-01T04:00:00Z Figure 8.17 The process of crossover, or recombination, occurs when two homologous chromosomes align and exchange a segment of genetic material. Concepts of Biology 2013-04-25T00:00:00Z In addition to acquiring usual mutations, SARS-CoV-2 can evolve rapidly through recombination, inserting one chunk of a sequence from a variant into the genome of another. Are New Omicron Subvariants a Threat? How Scientists are Keeping Watch 2022-04-18T04:00:00Z Tiny fluctuations in temperature and polarization of the CMB capture an all-important signal: the distance a sound wave travels from almost the beginning of the universe to the epoch of recombination. Astronomers Gear Up to Grapple with the High-Tension Cosmos 2022-04-18T04:00:00Z Some parts of the genome are recombination hotspots, whereas others do not show a propensity for recombination. Biology for AP Courses 2022-06-09T00:00:00Z The recombination process is the origin of what’s known as omicron XE. Virus mutations aren’t slowing down. New omicron subvariant proves it. 2022-05-01T04:00:00Z This mishmash of subvariants is not unexpected, Rutherford said, and viruses go through such recombination all the time. The new Omicron subvariant XE is getting attention. How concerned should we be? 2022-04-07T04:00:00Z WHO said it was also tracking an omicron variant that is a recombination of two versions: BA.1 and BA.2, which was first detected in Britain in January. WHO: COVID cases and deaths continue to fall globally 2022-04-06T04:00:00Z That is partly the rationale for invoking dark energy’s effects much earlier, before the epoch of recombination. Astronomers Gear Up to Grapple with the High-Tension Cosmos 2022-04-18T04:00:00Z By undergoing genetic recombination through conjugation and transformation only. Biology for AP Courses 2022-06-09T00:00:00Z Scientists also worry about the longer-term threat of viral recombination, in which an animal is simultaneously infected by two coronaviruses that swap genetic material, generating a new virus. The Coronavirus Menagerie 2022-02-22T05:00:00Z One key feature of sarbecoviruses is that they undergo extensive amounts of recombination. The Lab-Leak Hypothesis Made It Harder for Scientists to Seek the Truth 2022-02-18T05:00:00Z In that part of the world, there are many people in whom the recombination that added this ubiquitous set of genes to Omicron might have occurred, Soundararajan said. Omicron variant may have picked up a piece of common-cold virus 2021-12-03T05:00:00Z This process — known as recombination — may be reshaping the viruses from year to year. Newly discovered bat viruses give hints to COVID’s origins 2021-10-14T04:00:00Z Located at intervals along the synaptonemal complex are large protein assemblies called recombination nodules. Biology for AP Courses 2022-06-09T00:00:00Z It is possible the pandemic strain acquired the furin cleavage site in the wild by genetic recombination, in which viruses exchange bits of genetic material. Opinion | To prevent the next pandemic, we must find the source of covid-19. China’s stonewalling is unacceptable. 2021-10-11T04:00:00Z Such a variant could surface through either random mutation or “recombination,” which occurs when two different SARS-CoV-2 viruses infect the same cell and trade genetic information, creating a hybrid with the worst of each. Opinion | Herd immunity is almost here. But what does that mean? 2021-10-07T04:00:00Z "We probably missed many generations of recombinations" that occurred over time and that led to the emergence of Omicron, Soundararajan added. Omicron variant may have picked up a piece of common-cold virus 2021-12-03T05:00:00Z “It’s becoming more and more obvious how important recombination is,” Lytras said. Newly discovered bat viruses give hints to COVID’s origins 2021-10-14T04:00:00Z Errors can arise only during the recombination process which may result in deletions, duplications or translocations causing such abnormalities. Biology for AP Courses 2022-06-09T00:00:00Z It’s also possible that the furin cleavage site arose without recombination. Close cousins of SARS-CoV-2 found in a cave in Laos yield new clues about pandemic’s origins 2021-09-29T04:00:00Z Indeed, a timely analysis last year showed convincingly that it is a product of genetic recombination, a natural feature of coronavirus replication and evolution. Perspective | We may never know where the virus came from. But evidence still suggests nature. 2021-06-03T04:00:00Z When an animal is infected by two strains of coronaviruses, they can swap genetic material in a process called recombination. Scientists Don’t Want to Ignore the ‘Lab Leak’ Theory, Despite No New Evidence 2021-05-27T04:00:00Z “Clearly, the recombination is showing us that these viruses are part of a single gene pool over hundreds and hundreds of miles, if not thousands of miles,” Worobey said. Newly discovered bat viruses give hints to COVID’s origins 2021-10-14T04:00:00Z To understand this, let’s consider the biological basis of gene linkage and recombination. Biology for AP Courses 2022-06-09T00:00:00Z The data so far bears the hallmarks of natural recombination, he said, and no signs of human intervention. Biden Orders Intelligence Inquiry Into Origins of Virus 2021-05-26T04:00:00Z “This is a mosaic of several different recombinations, happening over and over, when nobody’s watching. And then boom, you get this monstrosity,” says virologist Benjamin Neuman at Texas A&M University. Two more coronaviruses can infect people, studies suggest 2021-05-20T04:00:00Z When wild animals are kept in close quarters, viruses have an opportunity to jump from species to species, sometimes resulting in dangerous recombinations that can lead to new diseases. Scientists Don’t Want to Ignore the ‘Lab Leak’ Theory, Despite No New Evidence 2021-05-27T04:00:00Z Still, recombination may be able to turn a virus going nowhere into a new threat. Newly discovered bat viruses give hints to COVID’s origins 2021-10-14T04:00:00Z Because the genes are aligned during recombination, the gene order is not altered. Biology for AP Courses 2022-06-09T00:00:00Z Sommer noted that these kinds of recombination events may happen all the time, but we rarely notice them unless they "bring together genetic changes that independently, or collectively, increase transmission or severity of illness." Two mutated coronaviruses have merged into one hybrid virus. Here's how that happened 2021-02-18T05:00:00Z The researchers were able to plug existing biological evidence into an algorithm - teaching a computer how to spot viruses and host species that were most likely to be a source of this recombination. AI used to 'predict the next coronavirus' 2021-02-16T05:00:00Z The team found that all three viruses showed “extensive” recombination when replicating separately in the laboratory. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z Coronaviruses can experience some shifts in function through a process known as recombination, when segments of one viral genome are spliced onto another by the enzyme making the viral copy. The coronavirus is mutating—but what determines how quickly? 2021-02-05T05:00:00Z Across a given chromosome, several recombination events may occur, causing extensive shuffling of alleles. Biology for AP Courses 2022-06-09T00:00:00Z If recombination did occur, adding some crucial new elements from a different coronavirus, this could have happened in a bat or possibly in another animal. How viruses shape our world 2021-01-14T05:00:00Z Instead, immune cells build their defensive repertoires through a process called recombination, which involves mixing and matching segments of DNA to create billions, trillions, even quadrillions of unique genetic stretches. Twins With Covid Help Scientists Untangle the Disease’s Genetic Roots 2021-01-18T05:00:00Z Scientists worry that recombination might allow for different variants of the coronavirus to combine into more dangerous versions inside of a person’s body. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z There is a theoretical possibility that the changes aimed at preventing recombination might not work—“a very low probability, high-consequence event” that could undermine faith in the eradication effort, he says. The polio eradication campaign is faltering. Can a new vaccine help it get back on track? 2020-11-10T05:00:00Z Figure 12.18 The process of crossover, or recombination, occurs when two homologous chromosomes align during meiosis and exchange a segment of genetic material. Biology for AP Courses 2022-06-09T00:00:00Z Yet they are also capable of a trick called recombination, in which two strains of coronavirus, infecting the same cell, swap sections of their genomes and give rise to a third, hybrid strain of coronavirus. How viruses shape our world 2021-01-14T05:00:00Z Writing in Nature, Yang et al.6 report structural data that shed light on how the protein RecA facilitates a key early step in the process of homologous recombination in bacteria. Demystifying the D-loop during DNA recombination 2020-10-13T04:00:00Z For now, he said, that idea is speculative: “It’s really hard to see these invisible scars from a recombination event.” The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z The evidence gathered so far is mixed and incomplete, complicated by the fact that coronaviruses are capable of a nifty evolutionary trick: recombination. Opinion | The Pandemic, From the Virus’s Point of View 2020-09-19T04:00:00Z When synapsed, homologous chromosomes undergo reciprocal physical exchanges at their arms in a process called homologous recombination, or more simply, “crossing over.” Biology for AP Courses 2022-06-09T00:00:00Z Once an animal enters a commercial supply chain, the risks of viral recombination, emergence and transmission increases. We Need Federal Action to Prevent the Next Pandemic 2020-07-27T04:00:00Z Yang and colleagues provide detailed data for D-loop structures that yield new insights into the mechanism of homologous recombination. Demystifying the D-loop during DNA recombination 2020-10-13T04:00:00Z “Diversity, no matter how much, does not mean recombination,” Dr. Gao said. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z With successive generations, DNA inherited from each parent undergoes “recombination”, whereby pieces of DNA from the mother and father are broken off and fused together. Indigenous Americans had contact with Polynesians 800 years ago, DNA reveals 2020-07-08T04:00:00Z Because they correspond to new allele combinations, the genotypes Ab and aB are nonparental types that result from homologous recombination during meiosis. Biology for AP Courses 2022-06-09T00:00:00Z She calls the work “an important technical breakthrough that will allow a much deeper understanding of malaria transmission and recombination.” Genetic Diversity of Malaria in a Single Mosquito Bite May Be Huge 2020-06-18T04:00:00Z These findings considerably advance our knowledge of the mechanism that underlies homologous recombination. Demystifying the D-loop during DNA recombination 2020-10-13T04:00:00Z Some scientists are studying recombination machinery not only to fend off the next pandemic, but to help fight this one. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z Takata and colleagues also took advantage of the fact that electrons and holes in their strontium titanate crystals collect at different crystal facets — a feature that further suppresses charge recombination. An almost perfectly efficient light-activated catalyst for producing hydrogen from water 2020-05-26T04:00:00Z These results suggested that linkage occurred most often, but a significant minority of offspring were the products of recombination. Biology for AP Courses 2022-06-09T00:00:00Z Finally, during recombination, chromatid arms are exchanged between the two homologous chromosomes. How sex chromosomes break up to get together 2020-05-26T04:00:00Z Understanding recombination in eukaryotes will require determination of the structures and mechanisms used by other accessory proteins that are also involved in recombination, because Rad51 is highly dependent on such protein co-factors9,10. Demystifying the D-loop during DNA recombination 2020-10-13T04:00:00Z Unlike small mutations, which are like typos in the sequence, a phenomenon called recombination resembles a major copy-and-paste error in which the second half of a sentence is completely overwritten with a slightly different version. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z The fact that both mutations and recombinations are at work complicates efforts to draw a family tree. Profile of a killer: the complex biology powering the coronavirus pandemic 2020-05-03T04:00:00Z Ultimately, it took a young undergraduate student and an “all-nighter” to mathematically elucidate the problem of linkage and recombination. Biology for AP Courses 2022-06-09T00:00:00Z The authors suggest that axis separation might suppress ineffectual intersister recombination in favour of homologous recombination between chromosomes. How sex chromosomes break up to get together 2020-05-26T04:00:00Z “In addition to origins of natural recombination and intermediate host, the killer coronavirus probably originated from a laboratory in Wuhan,” the scientists said. Thanks for nothing: U.S. scientists say China hampering search for origin of coronavirus 2020-04-04T04:00:00Z A flurry of new studies suggests that recombination may allow the virus to shapeshift in dangerous ways. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z “In addition to origins of natural recombination and intermediate host, the killer coronavirus probably originated from a laboratory in Wuhan. Safety level may need to be reinforced in high risk biohazardous laboratories,” the article concluded. Opinion | How did covid-19 begin? Its initial origin story is shaky. 2020-04-02T04:00:00Z If the genes carried on two homologs are not oriented correctly, a recombination event could result in the loss of genes from one chromosome and the gain of genes on the other. Biology for AP Courses 2022-06-09T00:00:00Z Acquaviva and colleagues’ model paints an elegant picture of how a genetic element, chromosome structure and the timing of meiosis interact to ensure proper recombination. How sex chromosomes break up to get together 2020-05-26T04:00:00Z Saccharomyces cerevisiae has highly efficient DNA recombination mechanisms, and biologists can hijack these by feeding the cell with large fragments that have overlapping ends, similar to those used for Gibson Assembly. How to build a genome 2020-02-23T05:00:00Z But how often these critical “recombination events” occur won’t be known until the vaccine is used in larger populations. Polio eradication program faces hard choices as endgame strategy fails 2019-12-30T05:00:00Z Bakish said a Black Rock sale was one of a number of real estate transactions the company will look it with the recombination of Viacom and CBS that was finalized last week. ViacomCBS explores sale of the famous CBS 'Black Rock' headquarters in Manhattan 2019-12-09T05:00:00Z This inversion pairing is essential to maintaining gene alignment during meiosis and to allow for recombination. Biology for AP Courses 2022-06-09T00:00:00Z Insufficient recombination at the PAR is a major cause of developmental disability and infertility4. How sex chromosomes break up to get together 2020-05-26T04:00:00Z For commonly used QDs that comprise a core surrounded by a thin shell, the rate of Auger recombination is usually much higher than that of photoluminescence. Quantum dots realize their potential 2019-11-26T05:00:00Z Antibody diversity arises when somatic recombination joins gene segments together, and when a subsequent process called somatic hypermutation operates, during the course of the antibody response, on the recombined gene segments encoding antibody variable regions. The advent and rise of monoclonal antibodies 2019-11-03T04:00:00Z The intervening DNA is deleted from the chromosome during the recombination process. One ring to rule them all 2019-10-29T04:00:00Z Sturtevant correctly presumed that genes are arranged in serial order on chromosomes and that recombination between homologs can occur anywhere on a chromosome with equal likelihood. Biology for AP Courses 2022-06-09T00:00:00Z This material limits the tunnelling of charges between the two monolayers to suppress electron–hole recombination. Two-dimensional semiconductors host high-temperature exotic state 2019-10-01T04:00:00Z Any cavity or sharp corner on the surface or at the core–shell interface would enhance the rate of non-radiative Auger recombination. Quantum dots realize their potential 2019-11-26T05:00:00Z Foster notes that past efforts to identify genetic markers for mite resistance have tended to fail because honey bees have one of the highest rates of genetic recombination in the animal kingdom. Breeders toughen up bees to resist deadly mites 2019-07-25T04:00:00Z This model is supported by the authors’ experiments, including their demonstration that blocking DNA movement through the cohesin ring biases recombination events to favour recombination targeting RSSs near the site where DNA movement was impeded. One ring to rule them all 2019-10-29T04:00:00Z Recombination of the body color and red/ cinnabar eye alleles will occur more frequently than recombination of the alleles for wing length and aristae length. Biology for AP Courses 2022-06-09T00:00:00Z They might instead favour something like ‘homologous recombination DNA repair deficiency syndrome’. New name for breast-cancer syndrome could help to save lives 2019-07-02T04:00:00Z Now we know that variations have many causes, including mutation, endosymbiosis, genetic drift, sexual recombination, epigenetic factors and, yes, horizontal gene transfer. Was Darwin Wrong? 2019-06-15T04:00:00Z Maria Jasin, a molecular biologist at the Memorial Sloan Kettering Cancer Center in New York, won the life science and medicine award for her studies on homologous recombination, a mechanism by which DNA repairs itself. Voyager spacecraft steward among winners of prestigious Hong Kong prizes 2019-05-21T04:00:00Z However, the gene drive worked successfully when Cas9 was expressed specifically in the female germ line, and, in this context, the Cas9 cuts of the Tyr sequence were repaired by homologous recombination. On the road to a gene drive in mammals 2019-01-22T05:00:00Z What are the functions of the restriction enzymes and DNA ligase in recombination? Biology for AP Courses 2022-06-09T00:00:00Z If our data are confirmed, this would indicate that recombination in these neurons may be involved in the disease process that leads to Alzheimer's. A New Idea about What Triggers Alzheimer's 2019-01-09T05:00:00Z Scientists have seen hints that such genomic reshuffling—known as somatic recombination—happens in our brain. ‘Landmark study’ shows brain cells revamp their DNA to make new proteins, perhaps sparking Alzheimer’s disease 2018-11-21T05:00:00Z Taken together, Lee and colleagues’ work reveals the surprising existence of a phenomenon known as somatic gene recombination in the brain. A newly discovered mechanism driving neuronal mutations in Alzheimer’s disease 2018-11-20T05:00:00Z This recombination produces light in the deep-red and infrared regions of the electromagnetic spectrum. Efficiency breakthrough for radical LEDs 2018-11-20T05:00:00Z Recombination between genes A and B is more frequent than recombination between genes B and C because genes A and B are farther apart; a crossover is therefore more likely to occur between them. Biology for AP Courses 2022-06-09T00:00:00Z The discovery of GR in the immune system by Susumu Tonegawa in the 1970s was preceded by theoretical work and observations on fish nervous systems suggesting that recombination might be relevant for the brain. A New Idea about What Triggers Alzheimer's 2019-01-09T05:00:00Z On the other hand, somatic recombination may promote Alzheimer’s disease in some people by producing harmful versions of the protein or by damaging brain cells in other ways, the scientists conclude. ‘Landmark study’ shows brain cells revamp their DNA to make new proteins, perhaps sparking Alzheimer’s disease 2018-11-21T05:00:00Z Despite the absence of sexual recombination, which shuffles the genetic deck in a population and offers new combinations of genes, these rotifers have managed to find newness by other means. The Scientist Who Scrambled Darwin’s Tree of Life 2018-08-13T04:00:00Z The remaining 75% of efficiency is lost through recombination pathways that don’t result in light emission. Efficiency breakthrough for radical LEDs 2018-11-20T05:00:00Z By undergoing genetic recombination through conjugation, transduction, and transformation. Biology for AP Courses 2022-06-09T00:00:00Z However, unlike the immune system, there was no molecular candidate for GR in fish let alone humans, and the notion of gene recombination in the brain languished. A New Idea about What Triggers Alzheimer's 2019-01-09T05:00:00Z Chun and his colleagues did not detect signs of somatic recombination in cells from other organs or in a different gene that’s active in the brain. ‘Landmark study’ shows brain cells revamp their DNA to make new proteins, perhaps sparking Alzheimer’s disease 2018-11-21T05:00:00Z As such, the two groups could not characterize how chromosome reduction affects recombination. Yeast chromosome numbers minimized using genome editing 2018-07-31T04:00:00Z Lacking the standard repair system of chromosomal recombination, genes on the Y chromosome began to decay and were eventually tossed out or reassigned to other chromosomes. Secrets of the Y Chromosome 2018-06-11T04:00:00Z However, recombination serves to exchange genetic material on homologous chromosomes such that maternal and paternal alleles may be recombined on the same chromosome. Biology for AP Courses 2022-06-09T00:00:00Z So he devised a new explanation for the process, which is now known as Hall-Shockley-Read recombination. Robert N. Hall, 96, whose inventions are everywhere, is dead 2018-05-11T04:00:00Z But if somatic recombination occurs in neurons, Proukakis says, it could also be involved in other brain diseases, such as Parkinson’s disease. ‘Landmark study’ shows brain cells revamp their DNA to make new proteins, perhaps sparking Alzheimer’s disease 2018-11-21T05:00:00Z During meiosis, genetic material is exchanged between paired chromosomes in a process called recombination. Yeast chromosome numbers minimized using genome editing 2018-07-31T04:00:00Z We provide evidence for the creation of HBV genotype A via recombination, and for a long-term association of modern HBV genotypes with humans, including the discovery of a human genotype that is now extinct. Ancient hepatitis B viruses from the Bronze Age to the Medieval period 2018-05-08T04:00:00Z In 1913, Sturtevant devised a method to assess recombination frequency and infer the relative positions and distances of linked genes on a chromosome based on the average number of crossovers between them during meiosis. Biology for AP Courses 2022-06-09T00:00:00Z When the body creates sperm or eggs, the cells engage in some reshuffling known as genetic recombination. Siblings Can Have Surprisingly Different DNA Ancestry. Here's Why. 2018-03-23T04:00:00Z A mechanism for the suppression of homologous recombination in G1 cells. Inactivation of DNA repair triggers neoantigen generation and impairs tumour growth 2017-11-28T05:00:00Z The high spore viability of each fusion strain indicates that some recombination might occur, ensuring proper chromosome segregation. Yeast chromosome numbers minimized using genome editing 2018-07-31T04:00:00Z The obvious interpretation is that recombination formed an ancestor of the oldest sequences, evidence of which is still present in the less-ancient and the modern representatives. Ancient hepatitis B viruses from the Bronze Age to the Medieval period 2018-05-08T04:00:00Z As shown in Figure 13.4, by using recombination frequency to predict genetic distance, the relative order of genes on chromosome 2 could be inferred. Biology for AP Courses 2022-06-09T00:00:00Z Because of recombination, siblings only share about 50 percent of the same DNA, on average, Dennis says. Siblings Can Have Surprisingly Different DNA Ancestry. Here's Why. 2018-03-23T04:00:00Z Homologous recombination restarts blocked replication forks at the expense of genome rearrangements by template exchange. Mechanism of tandem duplication formation in BRCA1-mutant cells 2017-11-21T05:00:00Z Beyond the current findings, these engineered yeast strains constitute powerful resources for studying fundamental concepts in chromosome biology, including replication, recombination and segregation. Yeast chromosome numbers minimized using genome editing 2018-07-31T04:00:00Z You, F. M. & Luo, M. C. Deletion polymorphism in wheat chromosome regions with contrasting recombination rates. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z Operating under these assumptions, Sturtevant postulated that alleles that were far apart on a chromosome were more likely to dissociate during meiosis simply because there was a larger region over which recombination could occur. Biology for AP Courses 2022-06-09T00:00:00Z Their large genomes are characterized by a high content of repetitive elements and large pericentromeric regions that are virtually devoid of meiotic recombination. A chromosome conformation capture ordered sequence of the barley genome : Nature : Nature Research 2017-04-25T04:00:00Z Through a series of experiments in the early 1980s, he harnessed homologous recombination to insert a gene into a specific location in the mammalian genome. Oliver Smithies (1925-2017) : Nature : Nature Research 2017-02-07T05:00:00Z Because the genomes of all cells from a given fusion strain are identical, they lack the genetic variability that researchers need to map recombination through the generations. Yeast chromosome numbers minimized using genome editing 2018-07-31T04:00:00Z We provide here empirical evidence for the hypothesis that recombination rate is the causal variable in this relationship24. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z The average number of crossovers between two alleles—that is, their recombination frequency—correlated with their genetic distance from each other, relative to the locations of other genes on that chromosome. Biology for AP Courses 2022-06-09T00:00:00Z Moreover, chromosomal compartments are differentiated by an exponential gradient of gene density and recombination rate, striking contrasts in the distribution of retrotransposon families, and distinct patterns of genetic diversity. A chromosome conformation capture ordered sequence of the barley genome : Nature : Nature Research 2017-04-25T04:00:00Z If allelic divergence is important for adaptation to a fluctuating environment, one might predict that recombination would be suppressed. Evolutionary genomics of the cold-adapted diatom Fragilariopsis cylindrus : Nature : Nature Research 2017-01-15T05:00:00Z The effective population size history was then estimated from the number of recombination events separating segments of constant time to most recent common ancestor. Genome sequence and genetic diversity of European ash trees : Nature : Nature Research 2016-12-25T05:00:00Z The new recombination rate alters the rate with which dispensable DNA is deleted from the region17, thereby altering gene density. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z Using mutant flies with structurally distinct X chromosomes was the key to observing the products of recombination because DNA sequencing and other molecular tools were not yet available. Biology for AP Courses 2022-06-09T00:00:00Z The distal zone 1 was characterized by an enrichment of low-copy regions, a high gene content and frequent meiotic recombination. A chromosome conformation capture ordered sequence of the barley genome : Nature : Nature Research 2017-04-25T04:00:00Z The positions of the recombination events within a scaffold were approximated as the middle between the positions of the two RAD markers between which the marker pattern changed from one map location to the next. The genomic basis of circadian and circalunar timing adaptations in a midge : Nature : Nature Research 2016-11-20T05:00:00Z “We still see a recombination with CBS ... as a possibility, and believe that the Telefe investment would likely also benefit the combined company.” Viacom buys Argentinian TV network for $345 million 2016-11-15T05:00:00Z Note that the colinearity profiles are broadly an inverse of the recombination rate profile. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z Chromosomal crossover occurs during the mitotic process when chromosomes are linked together and recombination takes place, increasing the variance of genetic combinations in the haploid mitotic cells formed from mitosis. Biology for AP Courses 2022-06-09T00:00:00Z The patent describes a method for introducing DNA changes by causing breaks in the DNA using a molecules dubbed chimeric restriction endonucleases and the subsequent cellular repair processes called homologous recombination and nonhomologous end joining. Dramatic twists could upend patent battle over CRISPR genome-editing method 2016-10-05T04:00:00Z The board of CBS, which hasn’t been involved in the legal battles, also named a special committee to review a potential recombination, a spokesperson said Friday. Viacom and CBS Boards Name Special Committees to Review Merger 2016-09-30T04:00:00Z Somatic mutations are in red and residues arising from recombination at the V-D-J junction are in green. Structural basis of potent Zika–dengue virus antibody cross-neutralization : Nature : Nature Research 2016-06-22T04:00:00Z First derivatives were estimated from these functions using local polynomial smoothers; these derivatives allowed for computation of the recombination rate at each gene. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z Recombination of the red/brown eye and long/ short aristae alleles will occur more frequently than recombination of the alleles for wing length and body color. Biology for AP Courses 2022-06-09T00:00:00Z “Les Moonves would do a terrific job if they wanted to go that way,” Mr. Malone said of a possible recombination. Media Moguls Talk Deals at Sun Valley 2016-07-07T04:00:00Z Repeated mutations, owing to low-fidelity replication and frequent recombination, mean that at any time antigenic shift may occur, and a new, fatal pandemic may arise. When the Cold comes : Nature : Nature Publishing Group 2016-05-31T04:00:00Z Somatic mutations are in red and residues arising from recombination at the V-D-J junction are in green. Structural basis of potent Zika–dengue virus antibody cross-neutralization : Nature : Nature Research 2016-06-22T04:00:00Z Comparative physical mapping links conservation of microsynteny to chromosome structure and recombination in grasses. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z It describes linkage, recombination, and crossing over and states that Mendelian genes have specific loci on chromosomes, which undergo segregation and independent assortment. Biology for AP Courses 2022-06-09T00:00:00Z They used the fact that the genome, over time, gets scrambled around as pieces switch between chromosomes in a process called "recombination". Famous peppered moth's dark secret revealed - BBC News 2016-06-01T04:00:00Z Ion–ion recombination progressively neutralizes the charged particles as they grow, but some reappear at larger sizes, owing to diffusion charging. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z This so-called “recombination” of DNA in mitochondria is extremely unusual. Best-friend genetics 2016-05-19T04:00:00Z Our proposal of recombination rate as the causal variable readily accounts for the peaks in both profiles. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z It helped increase understanding of linkage and recombination. Biology for AP Courses 2022-06-09T00:00:00Z "In human cancer, the tumour's mitochondrial DNA is likely to be very similar to the mitochondrial DNA in the patient's normal cells, so the result of recombination would be almost impossible to recognise." Dog sex cancer's global march mapped in DNA - BBC News 2016-05-16T04:00:00Z Ion–ion recombination results in a neutral particle, which may evaporate at small sizes. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z And as such they provide the raw material for further invention, for recombination and parody and elaboration and homage, for dumb jokes and works of art, for individual invention and shared celebration. TV Picks: 'Star Wars Wars,' 'Star Wars Uncut' 2015-12-18T05:00:00Z Physical maps and recombination frequency of six rice chromosomes. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z Justify the selection of data and the procedure from which data could be collected that would have provided the necessary evidence to confirm linkage and recombination. Biology for AP Courses 2022-06-09T00:00:00Z This "recombination" is a routine part of how the regular DNA in our chromosomes gets jostled around - but evidence of it happening in mitochondria is rare and controversial. Dog sex cancer's global march mapped in DNA - BBC News 2016-05-16T04:00:00Z The model allows partial evaporation of such recombination particles; in this case the cluster divides into monomers and the mass is conserved. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Around the 400,000-year mark, however, the expanding universe cooled enough for hydrogen atoms to form at last—an event known as recombination. Superstars of the First Galaxies 2015-11-30T05:00:00Z The decay of colinearity with other grass genomes correlates with recombination rates along chromosomes. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z In eukaryotes, duplications and the shuffling of parental genes through recombination are important sources of variation. Biology for AP Courses 2022-06-09T00:00:00Z The mitochondria genome was assembled into 20 partially overlapping circular chromosomes, which are the product of intramolecular recombination events that collectively span 1,100 kb. Single-molecule sequencing of the desiccation-tolerant grass Oropetium thomaeum : Nature : Nature Publishing Group 2015-11-10T05:00:00Z The probability of cluster survival after ion–ion recombination, , is: Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z After subjecting a stretch of DNA as long as the human genome to mutation and recombination for 100 million generations, some random stretches of DNA evolved into active genes. A Surprise Source of Life's Code 2015-08-31T04:00:00Z We propose that the vast amounts of very similar repeated sequences cause frequent errors in recombination and lead to gene duplications and structural chromosome changes that drive fast genome evolution. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z The exchange of DNA between homologous pairs of chromosomes is called genetic recombination, which occurs by the crossing over of DNA between homologous strands of DNA, such as nonsister chromatids. Biology for AP Courses 2022-06-09T00:00:00Z Isolation, purification, and recombination: That was also Cornell’s technique. Better Than LSD? Trip Out On Joseph Cornell's Mind-Altering Art At This London Exhibit 2015-07-21T04:00:00Z Ion–ion recombination progressively neutralizes the charged particles as they grow, but some reappear at larger sizes, owing to diffusion charging. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z Concept-generation techniques.Intellectual capital is often the identification of new concepts or, more often, the recombination of commonly understood, recognized and already validated concepts. How To Develop Intellectual Capital 2015-06-07T04:00:00Z We propose that after an NCI or end-to-end fusion the repositioned region acquires a new recombination rate conforming to its new position relative to the telomere26. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z If the recombination frequency between two genes is less than 50 percent, they are said to be linked. Biology for AP Courses 2022-06-09T00:00:00Z And together they exemplify the two sorts of novelty that exist, in differing proportions, in any successful invention: discovery and recombination. Now and then 2015-04-23T04:00:00Z These rare informative recombination events would be missed by standard genotyping arrays with probes spread thinly across the entire genome. Genetic and epigenetic fine mapping of causal autoimmune disease variants : Nature : Nature Publishing Group 2014-10-28T04:00:00Z Genetic recombination is a crapshoot, and the outcome depends as much on psychology as on physiology. The Ride of Their Lives 2014-12-01T05:00:00Z All four phenomena that Laland and colleagues promote are ‘add-ons’ to the basic processes that produce evolutionary change: natural selection, drift, mutation, recombination and gene flow. Does evolutionary theory need a rethink? 2014-10-07T04:00:00Z Genetic maps provide an outline for the location of genes within a genome, and they estimate the distance between genes and genetic markers on the basis of recombination frequencies during meiosis. Biology for AP Courses 2022-06-09T00:00:00Z As bitter as their relationship had become, Rigas and Zilkha collaborated in 2012 on a mutually remunerative recombination of the Colt companies. Why Colt Can't Shoot Straight 2014-05-29T04:00:00Z Association with IBD decreases with physical distance along the chromosome, due to rare recombination events that break up the haplotype and distinguish the causal missense mutation from other tightly linked neutral variants. Genetic and epigenetic fine mapping of causal autoimmune disease variants : Nature : Nature Publishing Group 2014-10-28T04:00:00Z Growth does not happen in the lab, it happens in the markets over a long period of time in a slow process of diffusion, improvement, and recombination. By invitation: Dan Breznitz: Startups are a great start, but not the goal 2014-04-04T06:24:51Z Growth does not happen in the lab, it happens in the markets over long period of time in a slow process of diffusion, improvement, and recombination. By invitation: Dan Breznitz: Startups are a great start, but not the goal 2014-04-04T06:24:51Z It is based on the natural recombination process. Biology for AP Courses 2022-06-09T00:00:00Z However, incomplete DSB repair by recombination activates a checkpoint that triggers cell death. [Report] Reversal of Female Infertility by Chk2 Ablation Reveals the Oocyte DNA Damage Checkpoint Pathway 2014-01-30T19:26:12.333Z He looked at thousands of DNA sites in the cell line and found that the chromosomes had recombination patterns strikingly similar to those of mouse parthenotes — evidence that Daley calls “unequivocal”. Cloning comeback 2014-01-22T18:20:28.773Z Loss corrections are applied to the charged cluster spectra to account for wall losses, dilution and ion–ion recombination. Molecular understanding of sulphuric acid–amine particle nucleation in the atmosphere 2013-10-16T17:22:18.533Z Elevated point mutation frequencies may also arise through mechanisms that affect gross chromosome structure, such as DNA replication stress and defects in homologous recombination. The causes and consequences of genetic heterogeneity in cancer evolution 2013-09-18T17:22:16.487Z Binary fission does not provide an opportunity for genetic recombination or genetic diversity, but prokaryotes can share genes by three other mechanisms. Biology for AP Courses 2022-06-09T00:00:00Z Deletion of Chk2 restored fertility to females that would otherwise be sterile because of a meiotic recombination mutation or radiation exposure. [Report] Reversal of Female Infertility by Chk2 Ablation Reveals the Oocyte DNA Damage Checkpoint Pathway 2014-01-30T19:26:12.333Z By inducing recombination of the conditional reporter allele in a small percentage of papilloma cells, rare marked clones were tracked over time to assess their contribution to tumour growth. Tumour heterogeneity and cancer cell plasticity 2013-09-18T17:21:13.347Z However, we cannot rule out that other forms of recombination occur in bdelloid populations in ways that do not require homologous pairing, such as parasexuality. Genomic evidence for ameiotic evolution in the bdelloid rotifer Adineta vaga 2013-08-21T17:50:58.107Z Most great ape genetic variation remains uncharacterized; however, its study is critical for understanding population history, recombination, selection and susceptibility to disease. Great ape genetic diversity and population history 2013-07-24T17:21:11.837Z However, even if the genes he examined were not located on separate chromosomes, it is possible that he simply did not observe linkage because of the extensive shuffling effects of recombination. Biology for AP Courses 2022-06-09T00:00:00Z Female infertility caused by a meiotic recombination mutation or irradiation was reversed by mutation of . [Report] Reversal of Female Infertility by Chk2 Ablation Reveals the Oocyte DNA Damage Checkpoint Pathway 2014-01-30T19:26:12.333Z Although this data set is limited, the analysis suggested that LTR-RT-related sequences might be removed less frequently by unequal recombination than in other plant genomes. The Norway spruce genome sequence and conifer genome evolution 2013-05-29T17:21:22.577Z Sure enough, in the fire ants, a group of about 600 genes surrounding Gp-9 showed a complete absence of recombination, the researchers report online today in Nature. First Known 'Social Chromosome' Found 2013-01-16T19:40:00Z Moreover, for gene discovery, forward genetic strategies based on recombination will not be effective in these regions. A physical, genetic and functional sequence assembly of the barley genome 2012-12-05T15:22:37.090Z Therefore, genes that are far apart on the same chromosome are likely to still assort independently because of recombination events that occurred in the intervening chromosomal space. Biology for AP Courses 2022-06-09T00:00:00Z The scale of gene loss in hexaploid wheat compared with maize and Brassica rapa is significantly smaller, possibly as a result of its relatively recent origin and the absence of intergenome recombination. Analysis of the bread wheat genome using whole-genome shotgun sequencing 2012-11-28T18:21:17.300Z But even if the cells accept the pairs, they might have trouble carrying out processes such as recombination — a highly orchestrated reshuffling of genetic material. Chemical biology: DNA's new alphabet 2012-11-21T18:21:07.117Z The team also discovered what might block recombination. First Known 'Social Chromosome' Found 2013-01-16T19:40:00Z Some promise may lie in manipulating patterns of recombination by either genetic or environmental intervention. A physical, genetic and functional sequence assembly of the barley genome 2012-12-05T15:22:37.090Z When genes are located in close proximity on the same chromosome, their alleles tend to be inherited together unless recombination occurs. Biology for AP Courses 2022-06-09T00:00:00Z As expected, regions with the highest nucleotide differentiation between European and Asian wild boars were observed in high recombination regions towards the end of the chromosomes on both metacentric and acrocentric chromosomes. Analyses of pig genomes provide insight into porcine demography and evolution 2012-11-14T18:22:24.580Z There are thousands of people asking – and answering – questions about dominant mutations and recombination. Do online courses spell the end for the traditional university? 2012-11-11T00:01:04Z But if many genes are going to stick together through the generations, recombination can't occur. First Known 'Social Chromosome' Found 2013-01-16T19:40:00Z We attribute this pattern of eroded genetic diversity to low recombination in the pericentromeric regions, which reduces effective population size and consequently haplotype diversity. A physical, genetic and functional sequence assembly of the barley genome 2012-12-05T15:22:37.090Z However, because of the process of recombination, or “crossover,” it is possible for two genes on the same chromosome to behave independently, or as if they are not linked. Biology for AP Courses 2022-06-09T00:00:00Z “Digital communication affects companies in all kinds of ways,” Mr. Doctor said, “but it’s really this recombination of the digital and physical that defines the age we’re in.” Van Heyst Group Aims to Turn Company Events Into Media Gold 2012-09-15T20:35:41Z These scientists used Neurospora crassa to work out many of the fundamentals of sexual recombination or “crossing over” of homologous parental chromosomes in the mid-20th century. How Ballistic Cup Fungi Fire Their Spores (and Look Cool Doing It) 2012-09-05T20:45:15.367Z Their strategy, Keller explains, was to determine whether a group of genes in this area maintained its integrity by avoiding what's called recombination. First Known 'Social Chromosome' Found 2013-01-16T19:40:00Z The genomes of most chloroplasts are capable of high rates of homologous recombination, and targeting specific genes in these organelles is not difficult in most species. Exploiting diversity and synthetic biology for the production of algal biofuels 2012-08-15T17:22:27.080Z This process is called recombination, or crossover, and it is a common genetic process. Biology for AP Courses 2022-06-09T00:00:00Z Efficient operation of the solar cell relies on the separation and collection of energy-bearing photocarriers before they lose their excess energy through recombination. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z The Shockley–Queisser limit is a well-known efficiency limit of single-junction solar cells, which suffer from spectrum losses, recombination and black-body radiation. Opportunities and challenges for a sustainable energy future 2012-08-15T17:21:52.727Z Only well-characterized live vaccines, rendered harmless by mutations in the same or overlapping regions, should be used in order to minimize the risk of recombination to a new virulent strain, he argues. Chicken Vaccines Combine to Produce Deadly Virus 2012-07-12T19:00:00Z This recombination leads to gametes with a unique combination of genetic material from both parents and is responsible for genetic diversity within populations. Decoding the dance of the chromosomes 2012-06-22T03:15:09.577Z He also assumed that the incidence of recombination between two homologous chromosomes could occur with equal likelihood anywhere along the length of the chromosome. Biology for AP Courses 2022-06-09T00:00:00Z Injection of electrons from the dye into the conduction band of the oxide nanoparticles must proceed faster than exciton recombination within the dye. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z Thus, avian A/H5N1 influenza viruses can acquire the capacity for airborne transmission between mammals without recombination in an intermediate host and therefore constitute a risk for human pandemic influenza. [Special Issue Report] Airborne Transmission of Influenza A/H5N1 Virus Between Ferrets 2012-06-21T18:26:51.147Z There are all the same forces of change, variation, selection and recombination as different musical traditions join together, transmute and fuse and divide again. Is this the end of the composer? 2012-06-19T00:47:34Z Composite image showing fluorescent pollen demonstrating the increase in meiotic recombination. Decoding the dance of the chromosomes 2012-06-22T03:15:09.577Z A recombination frequency of 0.5 indicates that 50 percent of offspring are recombinants and the other 50 percent are parental types. Biology for AP Courses 2022-06-09T00:00:00Z Finally, recombination must be eliminated in the electrolyte or hole conductor. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z Leroi says, "We want to fiddle with the mutation rates, fiddle with the recombination rates." How Listeners Shape the Evolution of Music 2012-06-18T21:15:00.263Z Sex therefore, through recombinations of ancestral materials, undoubtedly means, among other things, the production of great diversity in offspring. Being Well-Born An Introduction to Eugenics 2012-05-22T15:16:53.140Z More colours spread across the four cells indicate more recombination along the chromsome. Decoding the dance of the chromosomes 2012-06-22T03:15:09.577Z Weeks later, homologous recombination in Drosophila was demonstrated microscopically by Curt Stern. Biology for AP Courses 2022-06-09T00:00:00Z On the positive side, the forward injection of charge carriers into the acceptor is helped by the abundance of sites available, but back recombination of the charge-separated carriers across the interface becomes more likely. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z In fitting the transitions between genealogies along the alignment, CoalHMM also estimates a regional recombination rate. Insights into hominid evolution from the gorilla genome sequence 2012-03-07T18:21:00.777Z Late last year, two other groups put forward competing theories that suggest that Auger recombination plays little or no part in efficiency droop. Engineers Take Aim at Efficiency Barrier in LED Technology 2012-02-20T21:54:41Z In the latter case, we expect a genome-wide signature of an excess of low-frequency polymorphisms and of polymorphism relative to divergence, exacerbated in regions of low recombination. The Drosophila melanogaster Genetic Reference Panel 2012-02-08T18:51:32.053Z Chromosomal crossover results in the inheritance of genetic material by offspring and the recombination event is not variable in frequency or location. Biology for AP Courses 2022-06-09T00:00:00Z This improved rectification benefits the open-circuit voltage and results in a higher net charge collection efficiency by ensuring that forward transfer is quicker than recombination, achieving near-unity net collection of photogenerated electrons. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z Flu viruses mutate constantly, sometimes on their own as they replicate inside an infected cell, and sometimes through recombination — directly swapping genes with other flu viruses. New Swine Flu Virus Could Complicate Influenza Season 2011-12-30T12:05:30Z “For me the only model that is consistent with all of the experimental data is Auger recombination,” he said. Engineers Take Aim at Efficiency Barrier in LED Technology 2012-02-20T21:54:41Z We propose that the correlation of polymorphism with recombination in regions where recombination is < 2cMMb is due to the reduced effective population size in regions of low recombination. The Drosophila melanogaster Genetic Reference Panel 2012-02-08T18:51:32.053Z Enhanced interfacial recombination of carriers at these high photon energies may also contribute to the drops in EQE and IQE, as is typical in conventional solar cells. [Report] Peak External Photocurrent Quantum Efficiency Exceeding 100% via MEG in a Quantum Dot Solar Cell 2011-12-15T18:55:58.470Z Impedance spectroscopy is an important tool for investigating electron transport and recombination in mesoscopic titanium-dioxide films, as well as interfacial charge transfer at the counter electrode and diffusion in the electrolyte. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z Each season, there's a chance that, through mutations and recombinations, a novel virus will emerge — one that few, or no, humans have encountered before. Morbidity: A personal response 2011-12-07T18:21:03.867Z This recombination thesis was so counterintuitive that Dr. Marmur and Dr. Doty took bets from doubting fellow scientists, who believed their results were wrong. Paul Doty, 91, Biochemist and Arms Control Advocate, Dies 2011-12-07T03:56:15Z New -linked mutations are directly exposed to selection each generation in hemizygous males, and the chromosome has greater recombination than autosomes; both of these factors could contribute to this observation. The Drosophila melanogaster Genetic Reference Panel 2012-02-08T18:51:32.053Z The later is looked upon as simply a recombination of the earlier existences. John Dewey's logical theory 2011-11-28T03:00:21.547Z The rapidly ensuing dissociation into free charge carriers, which must outpace recombination, maximizes the short-circuit current. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z “This research shows that recombination can occur and give rise to new virulent strains,” he says. Frog-killer fungal disease was born in worldwide trade, study suggests 2011-11-14T15:03:21Z Before I began working on telomeres, I’d been studying DNA recombination. A Conversation With Jack W. Szostak: From Telomeres to the Origins of Life 2011-10-17T21:40:52Z Table 1: Community resources Evolutionary models of hitchhiking and background selection predict a positive correlation between polymorphism and recombination rate. The Drosophila melanogaster Genetic Reference Panel 2012-02-08T18:51:32.053Z History offers to us the only available substitute for the isolation and for the cumulative recombination of experiment. John Dewey's logical theory 2011-11-28T03:00:21.547Z Grain boundaries are typically copper-poor in CIGSSe devices relative to the grain interiors, which modifies the valence band offset such that the boundaries repel holes and recombination is reduced. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z At the Rockefeller Foundation, we know from almost 100 years of experience the power of recombination to drive innovation. Dot Earth: Innovation from the Bottom up 2011-07-28T19:04:11Z She was studying how chromosome structure dictates where and when recombination occurs, which dovetailed with my interest in mapping chromosome structure. Turning point: Job Dekker 2011-07-06T17:20:38.097Z Recombination is the major predictor of polymorphism on the chromosome and autosomes; however, the significant effect of autosomal chromosome region remains after accounting for variation in recombination rates between centromeric and non-centromeric regions. The Drosophila melanogaster Genetic Reference Panel 2012-02-08T18:51:32.053Z We therefore hypothesized that recombination between these two retroviruses resulted in the formation of XMRV. [Report] Recombinant Origin of the Retrovirus XMRV 2011-07-05T19:26:24.207Z These defects affect solar cell performance by acting as Shockley–Read–Hall recombination centres. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z After more combinations and recombinations, out on the surface of all things His activities blossom in the finest bit of organism, the sensitized thing which we call the human body. What and Where is God? A Human Answer to the Deep Religious Cry of the Modern Soul 2011-07-03T02:00:08.347Z Ellis is working with Geoff Baldwin, a biochemist also at Imperial, and other colleagues to develop rules to find out which sequences will work with multiple overlap techniques, including recombination in yeast and Bacillus. Synthetic genomes: The next step for the synthetic genome 2011-05-18T17:21:09.763Z Selection is less efficient in regions of low recombination, consistent with our observation that the fraction of strongly deleterious mutations and positively selected sites are reduced in these regions. The Drosophila melanogaster Genetic Reference Panel 2012-02-08T18:51:32.053Z One was the random recombination of a virus, making it infectious to man. Edwin Kilbourne, Flu Vaccine Expert, Dies at 90 2011-02-25T05:05:24Z That gene is at the heart of a crucial but seemingly irrelevant process called genetic recombination. The Human Genome at Ten 2011-02-15T15:31:51Z Richter’s work. chemical decomposition and recombination, the resulting liquid was neutral again, i.e. it did not contain any excess of acid or base. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z The strain also occasionally swaps or recombines DNA with other bacteria, and such recombination may be far more important in developing drug resistance. Pneumonia Drugs Helped Evolve a Superbug 2011-01-28T16:09:00Z Because of their large copy number and high sequence identity, Alu repeats play a crucial role in multiple forms of structural variation through insertion and post-insertion recombination. Comparative and demographic analysis of orang-utan genomes 2011-01-26T18:22:58.603Z On increasing the voltage the speed of the ions is increased, fewer recombine, the current increases, and, when the condition for recombination is practically removed, it will have a maximum value. A Brief Account of Radio-activity But no one suspected that recombination might also play a role in generating new species. The Human Genome at Ten 2011-02-15T15:31:51Z Recombination.—Several methods enable us to deduce the coefficient of recombination of the ions when we know their velocities. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" That is to say, it is able to set up processes of disruption and of recombination, apparently by its mere presence, but, in reality, by its own continual breaking down and building up again. Naturalism And Religion It is possible even that characters that are entirely new may be produced by the interaction of factors brought into recombination. A Critique of the Theory of Evolution If there is no electric field, a cloud can be produced some time after the shutting off of the source of radiation, showing that time is required for the recombination of the ions. A Brief Account of Radio-activity A new variety originating from hybridization is but a recombination of the characters of the parents; the combination is new but the characters are not. Manual of American Grape-Growing If λ is the distance of P from this plate, this region cannot furnish more than qλ positive ions, and only this number if there are no recombinations. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" In these cases, also, recombination can be partially effected by the rays. The Birth-Time of the World and Other Scientific Essays He has studied in a very ingenious manner, not only the mobilities, but also the law of recombination which regulates the spontaneous return of the gas to its normal state. The New Physics and Its Evolution One of the special features in connection with Mr. Greenwood's new departure is the novel and ingenious method by which the electrolyzed products are separated, and their recombination rendered impossible. Scientific American Supplement, No. 841, February 13, 1892 In this, as in every other respect, he draws the elements of his life from his ancestors, however new the recombination may be and however greatly it may be modified by subsequent conditions. Studies in the Psychology of Sex, Volume 6 Sex in Relation to Society The luminosity at the head of the striations is due to the recombination of the ions. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" If this recombination happened in the mineral we should not have the concentric spheres so well defined as we see them to be. The Birth-Time of the World and Other Scientific Essays Other ions are thus born, and this production is in part compensated for by recombinations between ions of opposite signs. The New Physics and Its Evolution If a compound has been resolved into its elements, we cannot be sure that it has been resolved into all its elements until the original compound has been produced by their recombination. The Gospels in the Second Century An Examination of the Critical Part of a Work Entitled 'Supernatural Religion' Its specific character, which marks it off from Memory, and which is derived from the powers of selection and recombination, will be expounded further on. The Principles of Success in Literature The recombination of ions which do not possess considerable amounts of energy does not seem to give rise to luminosity. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" What, then, hinders the initial recombination in the solid? The Birth-Time of the World and Other Scientific Essays Are combinations and recombinations to continue until by pure chance some rational self-supporting system emerges? The Idea of Progress An inguiry into its origin and growth Composting artificially accelerates the decomposition of crude organic matter and its recombination into humus. Organic Gardener's Composting Its specific character, that which marks it off from simple memory, is its tendency to selection, abstraction, and recombination. The Principles of Success in Literature Thus, in an ionized gas not exposed to an electric field, although we have recombination between the ions, we need not have luminosity. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" Initial recombination seems, however, to be absent or diminished in effectiveness; probably because of the new stability instantly assumed by the ionised atoms. The Birth-Time of the World and Other Scientific Essays In this manner the conditions in the complex molecule of biotite, tourmaline, etc., may be quite as effective in preventing initial recombination as the most effective electric force we could apply. The Birth-Time of the World and Other Scientific Essays Much of the ionisation in gases is again undone by recombination before diffusion leads to the separation of the ions. The Birth-Time of the World and Other Scientific Essays This "initial recombination" is greatest towards the end of the path of the ray where the ionisation is a maximum. The Birth-Time of the World and Other Scientific Essays The rate of recombination depends upon the product of the number of each sign present in unit volume. The Birth-Time of the World and Other Scientific Essays In the former, initial recombination may obscure the intense ionisation near the end of the range. The Birth-Time of the World and Other Scientific Essays The ionic density is therefore high, and recombination very rapidly removes the ions after they are formed. The Birth-Time of the World and Other Scientific Essays |
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