Results 41 to 50 of about 324,450 (325)
Bulletin of Mathematical Biology, 2016 Genetic diversity grows with the population size in most neutral evolution models. Empirical evidence of large populations with limited diversity has been proposed to be due either to genetic bottlenecks or to selection. An alternative explanation is that the limited diversity is a result of rare reproduction events.
Alter, I., Louzoun, Y.
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Diffusion approximations in population genetics and the rate of Muller's ratchet [PDF]
Journal of Theoretical Biology 550, 111236, 2022, 2021 Diffusion theory is a central tool of modern population genetics, yielding simple expressions for fixation probabilities and other quantities that are not easily derived from the underlying Wright-Fisher model. Unfortunately, the textbook derivation of diffusion equations as scaling limits requires evolutionary parameters (selection coefficients ...
arxiv +1 more source
The clarifying role of time series data in the population genetics of HIV
bioRxiv, 2018 HIV can evolve remarkably quickly in response to anti-retroviral therapies and the immune system. This evolution stymies treatment effectiveness and prevents the development of an HIV vaccine.
A. Feder, P. Pennings, D. Petrov
semanticscholar +1 more source
An experimental test on the probability of extinction of new genetic variants [PDF]
, 2013 In 1927, J.B.S. Haldane reasoned that the probability of fixation of new beneficial alleles is twice their fitness effect. This result, later generalized by M. Kimura, has since become the cornerstone of modern population genetics.
Chelo, Ivo M. +3 more
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The Plant Genome, 2013 Two hundred sixteen barley ( L.) cultivars were selected to represent the diversity and history of European spring two-row barley breeding and to search for alleles controlling agronomic traits by association genetics.
Alessandro Tondelli +16 more
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Formal properties of the probability of fixation: identities, inequalities and approximations [PDF]
Theoretical Population Biology, 99: 98-113 (2015), 2013 The formula for the probability of fixation of a new mutation is widely used in theoretical population genetics and molecular evolution. Here we derive a series of identities, inequalities and approximations for the exact probability of fixation of a new mutation under the Moran process (equivalent results hold for the approximate probability of ...
arxiv +1 more source
Genetic draft, selective interference, and population genetics of rapid adaptation [PDF]
, 2013 To learn about the past from a sample of genomic sequences, one needs to understand how evolutionary processes shape genetic diversity. Most population genetic inference is based on frameworks assuming adaptive evolution is rare.
Neher, Richard A.
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Enzymatic processing of castor oil for value-added products [PDF]
Journal of Biotechnology & Biomaterials, 2012 S seeds of Sesamum indicum contain abundant oil, in particular, large amounts of unsaturated fatty acid oleic and linoleic acids. These unsaturated fatty acids lower the cholesterol level in the body. Because of their effects and antioxidant substances, attention has been paid to sesame seeds as health food.
R Kavitha +2 more
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Technologically modified genes in natural populations [PDF]
, 1993 Current theories of evolutionary and ecological genetics cannot be used for general statements on risk assessment of gene technology. In a simplifying model, the genes which are transferred from artificial populations are treated like mutations in the ...
Gabriel, Wilfried, Wöhrmann, Klaus
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PLOS ONE, 2019 The ecological theory of island biogeography suggests that mainland populations should be more genetically divergent from those on large and distant islands rather than from those on small and close islets. Some island populations do not evolve in a linear way, but the process of divergence occurs more rapidly because they undergo a series of ...
Buglione M. +7 more
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