Genetic architecture of a body colour cline in Drosophila americana.

ABSTRACT: Phenotypic variation within a species is often structured geographically in clines. In Drosophila americana, a longitudinal cline for body colour exists within North America that appears to be due to local adaptation. The tan and ebony genes have been hypothesized to contribute to this cline, with alleles of both genes that lighten body colour found in D. americana. These alleles are similar in sequence and function to the allele fixed in D. americana's more lightly pigmented sister species, Drosophila novamexicana. Here, we examine the frequency and geographic distribution of these D. novamexicana-like alleles in D. americana. Among alleles from over 100 strains of D. americana isolated from 21 geographic locations, we failed to identify additional alleles of tan or ebony with as much seq

SUBMITTER: Sramkoski LL 

PROVIDER: S-EPMC7482988 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature