Selectionandgeneticdrift：选择和遗传漂变 Selection and genetic drift Introduction There are three basic facts about genetic drift that I really want you to remember,even if you forget everything else I’ve told you about it:1.Allele frequencies tend to change from one generation to the next ...
Testing natural selection vs. genetic drift in phenotypic evolution using quantitative trait locus data . Genetics 149 : 2099 – 2104 .Orr HA . 1998b . Testing natural selection vs. genetic drift in phenotypic evolution using quantitative trait locus data . Genetics 149 : 2099 – 2104 ....
Evolutionary biologists have long sought a way to determine whether a phenotypic difference between two taxa was caused by natural selection or random genetic drift. Here I argue that data from quantitative trait locus (QTL) analyses can be used to test the null hypothesis of neutral phenotypic ev...
Although many studies confirm long-term small isolated populations (e.g. island endemics) commonly sustain low neutral genetic variation as a result of genetic drift, it is less clear how selection on adaptive or detrimental genes interplay with random forces. We investigated sequence variation at ...
the population will undergo genetic drift. The smaller the population size (N), the more important the effect of genetic drift. In practice, when modeling the effects of drift, we must consider effective population size (Ne), which is essentially the number of breeding individuals, and...
R10. c, VRF in R08 vs. R12. Extended Data Fig. 6 Zostera marina as a clonal plant. Ramets are physiologically independent and genetically unique ‘individuals’. Somatic mutations emerge as intra-ramet SNPs. Along with growth and branching of the genet, somatic genetic drift separates the ...
In theory, alleles can achieve high frequency due to mechanisms different than selection. For example, genetic drift is expected to result in the fixation of most alleles over time or even instantaneously following the founder effect. To argue for the action of recent selection (selective breeding...
In contrast to the Darwinian theory of evolution by natural selection, the neutral theory emphasizes the great importance of random genetic drift (due to f... Kimura,M. - 《Proceedings of the National Academy of Sciences》 被引量: 249发表: 1991年 Are Random Drift and Natural Selection Concept...
Genetic drift and selection are ubiquitous evolutionary forces acting to shape genetic variation in populations. While their relative importance has been well studied in plants and animals, less is known about their relative importance in fungal pathogens. Because agro-ecosystems are more homogeneous envi...
while drift is undirectional across generations. Methods such as Generation Proxy Selection Mapping [54,55] that investigates general allele frequency change, andG^[56] that focusses on genetic gain in a particular trait due to allele frequency change, can be used to investigate the impact of ...