Widespread selection and gene flow shape the genomic landscape during a radiation of monkeyflowers.

ABSTRACT: Speciation genomic studies aim to interpret patterns of genome-wide variation in light of the processes that give rise to new species. However, interpreting the genomic "landscape" of speciation is difficult, because many evolutionary processes can impact levels of variation. Facilitated by the first chromosome-level assembly for the group, we use whole-genome sequencing and simulations to shed light on the processes that have shaped the genomic landscape during a radiation of monkeyflowers. After inferring the phylogenetic relationships among the 9 taxa in this radiation, we show that highly similar diversity (π) and differentiation (FST) landscapes have emerged across the group. Variation in these landscapes was strongly predicted by the local density of functional elements and the recom

SUBMITTER: Stankowski S 

PROVIDER: S-EPMC6660095 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature