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- W4283512130 abstract "Abstract Insights into the processes underpinning convergent evolution advance our understanding of the contributions of ancestral, introgressed, and novel genetic variation to phenotypic evolution. Phylogenomic analyses characterizing genome-wide gene tree heterogeneity can provide first clues about the extent of ILS and of introgression and thereby into the potential of these processes or (in their absence) the need to invoke novel mutations to underpin convergent evolution. Here, we were interested in understanding the processes involved in convergent evolution in open-habitat chats (wheatears of the genus Oenanthe and their relatives). To this end, based on whole-genome resequencing data from 50 taxa of 44 species, we established the species tree, characterized gene tree heterogeneity, and investigated the footprints of ILS and introgression within the latter. The species tree corroborates the pattern of abundant convergent evolution, especially in wheatears. The high levels of gene tree heterogeneity in wheatears are explained by ILS alone only for 30% of internal branches. For multiple branches with high gene tree heterogeneity, D-statistics and phylogenetic networks identified footprints of introgression. Finally, long branches without extensive ILS between clades sporting similar phenotypes provide suggestive evidence for a role of novel mutations in the evolution of these phenotypes. Together, our results suggest that convergent evolution in open-habitat chats involved diverse processes and highlight that phenotypic diversification is often complex and best depicted as a network of interacting lineages." @default.
- W4283512130 created "2022-06-27" @default.
- W4283512130 creator A5009246089 @default.
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- W4283512130 creator A5035788699 @default.
- W4283512130 creator A5043426503 @default.
- W4283512130 creator A5078989298 @default.
- W4283512130 creator A5009028372 @default.
- W4283512130 date "2022-06-25" @default.
- W4283512130 modified "2023-10-12" @default.
- W4283512130 title "A Phylogenomic Assessment of Processes Underpinning Convergent Evolution in Open-Habitat Chats" @default.
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