Evolution of Hybrid Inviability Associated With Chromosome Fusions.

ABSTRACT: Chromosomal rearrangements, such as inversions, have received considerable attention in the speciation literature due to their hampering effects on recombination. Less is known about how other rearrangements, such as chromosome fissions and fusions, can affect the evolution of reproductive isolation. Here, we use crosses between populations of the wood white butterfly (Leptidea sinapis) with different karyotypes to identify genomic regions associated with hybrid inviability. We map hybrid inviability candidate loci by contrasting allele frequencies between F₂ hybrids that survived until the adult stage with individuals of the same cohort that succumbed to hybrid incompatibilities. Hybrid inviability candidate regions have high genetic differentiation between parental populations

SUBMITTER: Boman J 

PROVIDER: S-EPMC12717967 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature