Pervasive antagonistic interactions among hybrid incompatibility loci.

ABSTRACT: Species barriers, expressed as hybrid inviability and sterility, are often due to epistatic interactions between divergent loci from two lineages. Theoretical models indicate that the strength, direction, and complexity of these genetic interactions can strongly affect the expression of interspecific reproductive isolation and the rates at which new species evolve. Nonetheless, empirical analyses have not quantified the frequency with which loci are involved in interactions affecting hybrid fitness, and whether these loci predominantly interact synergistically or antagonistically, or preferentially involve loci that have strong individual effects on hybrid fitness. We systematically examined the prevalence of interactions between pairs of short chromosomal regions from one species (Solanum

SUBMITTER: Guerrero RF 

PROVIDER: S-EPMC5484531 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature