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- W4310363979 endingPage "551" @default.
- W4310363979 startingPage "537" @default.
- W4310363979 abstract "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 may be related to the evolution of sexual isolation and adaptation. We found evidence of pervasive phylogenetic discordance caused by ancient introgression events between distant lineages within the group, and more recent gene flow between closely related species. When assessing patterns of genome-wide divergence in species pairs across the group, we found no consistent genomic evidence of a disproportionate role for the X chromosome as has been found in other systems. Our results show how ancient and recent introgressions confuse phylogenetic reconstruction, but may play an important role during early radiation of a group." @default.
- W4310363979 created "2022-12-09" @default.
- W4310363979 creator A5045845153 @default.
- W4310363979 creator A5058702171 @default.
- W4310363979 creator A5074709958 @default.
- W4310363979 creator A5085644116 @default.
- W4310363979 date "2022-12-01" @default.
- W4310363979 modified "2023-09-29" @default.
- W4310363979 title "Divergence and introgression among the <i>virilis</i> group of <i>Drosophila</i>" @default.
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