The effect of autopolyploidy on population genetic signals of hard sweeps.

ABSTRACT: Searching for population genomic signals left behind by positive selection is a major focus of evolutionary biology, particularly as sequencing technologies develop and costs decline. The effect of the number of chromosome copies (i.e. ploidy) on the manifestation of these signals remains an outstanding question, despite a wide appreciation of ploidy being a fundamental parameter governing numerous biological processes. We clarify the principal forces governing the differential manifestation and persistence of the selection signal by separating the effects of polyploidy on the rates of fixation versus rates of diversity (i.e. mutation and recombination) using coalescent simulations. We explore the major consequences of polyploidy, finding a more localized signal, greater dependence on domi

SUBMITTER: Monnahan P 

PROVIDER: S-EPMC7058959 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature