| 单词 | polyploid |
| 例句 | PlantServation also enabled the scientists to experimentally replicate what happens after the natural speciation of a hybrid polyploid species. AI increases precision in plant observation 2023-09-22T04:00:00Z But polyploid organisms have all of the DNA from both parents, meaning they have twice as much DNA. World’s Largest Plant is a 4,500-Year-Old Sea Grass 2022-06-09T04:00:00Z When she and Fox looked at the fly wound sites a few days later, they saw signs that these so-called polyploid cells, and not stem cells, were the major wound healers. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z If this polyploid gamete fuses with a normal gamete from species one, with three chromosomes, the resulting offspring will have ten viable chromosomes. Fundamentals of Biology 2015-01-01T00:00:00Z Scientists have identified two main types of polyploidy that can lead to reproductive isolation of an individual in the polyploid state. Concepts of Biology 2013-04-25T00:00:00Z Plants grown from these cells are called polyploid because they have many sets of chromosomes. Miller & Levine Biology 2018-01-01T00:00:00Z Dubcovsky, J. & Dvorak, J. Genome plasticity a key factor in the success of polyploid wheat under domestication. Genome sequence of the progenitor of the wheat D genome Aegilops tauschii 2017-11-14T05:00:00Z Since then, the two scientists’ fascination with polyploid cells has only grown. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z The team says a new polyploid plant like this represents an opportunity to investigate the early stages of an important evolutionary process. Scientists discover a new flower of Shetland - BBC News 2017-08-15T04:00:00Z In the example shown, a normal gamete from one species fuses with a polyploid gamete from another. Concepts of Biology 2013-04-25T00:00:00Z However, the component subgenomes of a polyploid must cooperate to mediate potential incompatibilities of dosage, regulatory controls, protein–protein interactions and transposable element activity. Genome evolution in the allotetraploid frog Xenopus laevis : Nature : Nature Research 2016-10-18T04:00:00Z Plant genomes, and eukaryotic genomes in general, are typically repetitive, polyploid and heterozygous, which complicates genome assembly1. Single-molecule sequencing of the desiccation-tolerant grass Oropetium thomaeum : Nature : Nature Publishing Group 2015-11-10T05:00:00Z Indeed, some data suggest 80% of the cells in the human heart are polyploid by adulthood, up from none at birth. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z This gene is absent in the A-genome diploid donor and in polyploid wheat but is effective when transferred from T. monococcum to polyploid wheat. [Report] Identification of Wheat Gene Sr35 That Confers Resistance to Ug99 Stem Rust Race Group 2013-08-15T17:57:33.970Z In contrast, polyploidy is very common in the plant kingdom, and polyploid plants tend to be larger and more robust than euploids of their species. Concepts of Biology 2013-04-25T00:00:00Z Two other polyploid plants made waves last week: the carnivorous bladderwort and the sacred lotus. For Plants, Polyploidy Is Not a Four-Letter Word 2013-05-19T23:45:00.497Z Our genome assembly provides a diploid reference for analysis of polyploid wheat genomes and is a valuable resource for the genetic improvement of wheat. Draft genome of the wheat A-genome progenitor Triticum urartu 2013-04-04T15:21:00.373Z As polyploid cells emerge as common and seemingly crucial, this once obscure topic is now bringing together cancer researchers, developmental biologists, evolutionary biologists, cell biologists, and agricultural scientists. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z Yesterday Mr. Bolten asked the question whether or not some walnuts that have large nuts could possibly be tetraploid or polyploid. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 In most tumors, at least a few cells transform into nondividing polyploid giant cells, whose extra genetic material makes them resistant to chemotherapy or radiation. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z Van de Peer’s team found, for example, that some species of Arabidopsis, a genus often used in plant biology studies, became polyploid during cold spells over the past 2 million years. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z Our T. urartu draft genome sequence provides new insights into the A genome that is shared by many polyploid wheat species. Draft genome of the wheat A-genome progenitor Triticum urartu 2013-04-04T15:21:00.373Z About 30% of plants are fully polyploid, meaning all their cells have double or more the number of chromosomes found in their ancestors. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z We find numbers such as 32 representative of a polyploid situation. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 The researchers then grow the diploid and polyploid versions side by side to track how they cope with stresses such as high salinity or large concentrations of heavy metals. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z The polyploid plants proved more resilient, he reported at the May meeting. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z The polyploid plants tended to grow more slowly and reached smaller population sizes than their diploid counterparts. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z Evolutionary biologists have found that polyploid organisms are often at a competitive disadvantage compared with diploid counterparts, raising questions about why the trait persists. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z What is certain is the polyploid cells, far from being abnormal, are one of life’s major mechanisms for coping with the stresses of injury, disease, and a hostile environment. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z By mutating genes that control polyploidy in the mustardlike plant Arabidopsis thaliana, she and her team discovered that if the sepal had too few polyploid cells, it was stiff and upright and blooming was impeded. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z When plants are engineered to produce more polyploid giant cells, the leaf becomes more oblong. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z During development cells in the larger, rear part of the heart become more polyploid—with more sets of chromosomes—and bigger than those in the front part. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z When she interrupted scarring in wounded flies, polyploid cells continued to form and their wounds never fully closed up, she reported at the May meeting. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z To test the idea, he reduced flies’ levels of insulin, which lowered the number of polyploid cells in the heart. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z When they surveyed the scientific literature for similar finds, they learned that other groups had seen polyploid cells appear in diseased or stressed tissues, including in livers after the organs were injured. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z They found the number of polyploid cells and the number of nuclei and genomes in individual cells varied depending on factors including the size of their wound. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z Most important, if they inhibited the creation of polyploid cells by tinkering with genes needed for chromosome doubling or cell fusion, wounds failed to heal. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z Drugs targeting polyploid cells might also help counter one of their most destructive effects: their ability to help cancer cells withstand the stresses of treatment. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z The extra DNA of polyploid cells, Losick suggests, may also make them resistant to injury-induced DNA damage from inflammation that would cause a normal diploid cell to die, bogging down recovery. Cells with extra genomes may help tissues respond to injuries—and species survive cataclysms 2023-08-23T04:00:00Z |
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