Parallel genetic evolution and speciation from standing variation.

ABSTRACT: Adaptation often proceeds from standing variation, and natural selection acting on pairs of populations is a quantitative continuum ranging from parallel to divergent. Yet, it is unclear how the extent of parallel genetic evolution during adaptation from standing variation is affected by the difference in the direction of selection between populations. Nor is it clear whether the availability of standing variation for adaptation affects progress toward speciation in a manner that depends on the difference in the direction of selection. We conducted a theoretical study investigating these questions and have two primary findings. First, the extent of parallel genetic evolution between two populations rapidly declines as selection changes from fully parallel toward divergent, and this decline

SUBMITTER: Thompson KA 

PROVIDER: S-EPMC6591551 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature