The Impact of Dominance on Adaptation in Changing Environments.

ABSTRACT: Natural environments are seldom static and therefore it is important to ask how a population adapts in a changing environment. We consider a finite, diploid population evolving in a periodically changing environment and study how the fixation probability of a rare mutant depends on its dominance coefficient and the rate of environmental change. We find that, in slowly changing environments, the effect of dominance is the same as in the static environment, that is, if a mutant is beneficial (deleterious) when it appears, it is more (less) likely to fix if it is dominant. But, in fast changing environments, the effect of dominance can be different from that in the static environment and is determined by the mutant's fitness at the time of appearance as well as that in the time-averaged envir

SUBMITTER: Devi A 

PROVIDER: S-EPMC7463278 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature