Significance of population size on the fixation of nonsynonymous mutations in genes under varying levels of selection pressure.

Abstract excerpt

Previous studies observed a higher ratio of divergences at nonsynonymous and synonymous sites (ω = dN/dS) in species with a small population size compared to that estimated for those with a large population size. Here we examined the theoretical relationship between ω, effective population size (Ne), and selection coefficient (s). Our analysis revealed that when purifying selection is high, ω of species with...

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