Replicate geographic transects across a hybrid zone reveal parallelism and differences in the genetic architecture of reproductive isolation.

ABSTRACT: Determining the genetic architecture of traits involved in adaptation and speciation is one of the key components of understanding the evolutionary mechanisms behind biological diversification. Hybrid zones provide a unique opportunity to use genetic admixture to identify traits and loci contributing to partial reproductive barriers between taxa. Many studies have focused on the temporal dynamics of hybrid zones, but geographical variation in hybrid zones that span distinct ecological contexts has received less attention. We address this knowledge gap by analyzing hybridization and introgression between black-capped and Carolina chickadees in two geographically remote transects across their extensive hybrid zone, one located in eastern and one in central North America. Previous studies dem

SUBMITTER: Semenov G 

PROVIDER: S-EPMC12448226 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature