Dominance genetic variance for traits under directional selection in Drosophila serrata.

ABSTRACT: In contrast to our growing understanding of patterns of additive genetic variance in single- and multi-trait combinations, the relative contribution of nonadditive genetic variance, particularly dominance variance, to multivariate phenotypes is largely unknown. While mechanisms for the evolution of dominance genetic variance have been, and to some degree remain, subject to debate, the pervasiveness of dominance is widely recognized and may play a key role in several evolutionary processes. Theoretical and empirical evidence suggests that the contribution of dominance variance to phenotypic variance may increase with the correlation between a trait and fitness; however, direct tests of this hypothesis are few. Using a multigenerational breeding design in an unmanipulated population of Droso

SUBMITTER: Sztepanacz JL 

PROVIDER: S-EPMC4423378 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature