Divergence and introgression among the virilis group of Drosophila.

ABSTRACT: Speciation with gene flow is now widely regarded as common. However, the frequency of introgression between recently diverged species and the evolutionary consequences of gene flow are still poorly understood. The virilis group of Drosophila contains 12 species that are geographically widespread and show varying levels of prezygotic and postzygotic isolation. Here, we use de novo genome assemblies and whole-genome sequencing data to resolve phylogenetic relationships and describe patterns of introgression and divergence across the group. We suggest that the virilis group consists of three, rather than the traditional two, subgroups. Some genes undergoing rapid sequence divergence across the group were involved in chemical communication and desiccation tolerance, and ma

SUBMITTER: Yusuf LH 

PROVIDER: S-EPMC9783487 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature