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 ...
Testing natural selection vs. genetic drift in phenotypic evolution using quantitative trait locus data . Genetics 149 : 2099 – 2104 .Orr, H. A. 1998 . Testing natural selection vs. genetic drift in phenotypic evolution using quantitative trait locus data . Genetics 149 : 2099 – 2104 ....
Evolution happens when there is a change in the genetics of a population. Evolution can be caused by several processes including genetic drift and natural selection. Answer and Explanation:1 Genetic drift is different from natural selection because genetic drift occurs due to random chance. In genet...
Natural selection can produce genetic variation among demes within a metapopulation if different selective pressures prevail in different demes. IfNeis large enough to discount the effects of genetic drift, then we expect directional selection to fix the favored allele within a given focal deme...
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...
along an altitudinal gradient in Arabidopsis thaliana Y Luo1,2, A Widmer2 and S Karrenberg2,3 Understanding how natural selection and genetic drift shape biological variation is a central topic in biology, yet our understanding of the agents of natural selection and their target traits is ...
local populations of P exigua may be less genotypically diverse than P calcar, but should display marked genetic heterogeneity among local populations resulting from the accumulating effects of genetic drift and localised natural selection. To... A Hunt - 《Marine Ecology Progress》 被引量: 274发表...
Answer to: Explain how mutations, natural selection, genetic drift, and gene flow all work together to create and maintain genetic variation. By...
Natural selection and genetic drift are two important forces driving microevolutionary change. Assuming that the current and historical island populations diverged by isolation and genetic drift, and know- ing viviparity only occurs in the island populations, we suggest natural selection under particular...
Genetic Drift and Effective Population Size Like other species of Drosophila, Drosophila pseudoobscura has a distinct bias toward the usage of C- and G-ending codons. Prior studies have indicated that this bias is due, at least in part, to natural selection. Codon bias clearly dif... R Klima...