Introgression and Parental Conflict Shape Repeated Occurrences of Postzygotic Isolation.

ABSTRACT: Postzygotic reproductive isolation is often thought to accumulate as a byproduct of neutral divergence. Yet, it frequently evolves rapidly, in line with non-neutral evolution. A major driver of intrinsic postzygotic reproductive barriers are intragenomic conflicts, such as conflict between maternal and paternal interests in resource allocation to offspring (i.e. parental conflict). Parental conflict may underlie hybrid seed inviability, a common and rapidly evolving reproductive barrier in angiosperms. Yet, in closely related, hybridizing species, it remains unclear how intragenomic conflicts and introgression interact to determine the fate of incompatibility alleles in nature. Here, we explore repeated incidences of hybrid seed inviability in a rising model: the Mimulus guttatus sp

SUBMITTER: Frayer ME 

PROVIDER: S-EPMC12485971 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature