Balancing selection and the functional effects of shared polymorphism in cryptic Daphnia species.

ABSTRACT: The patterns of genetic variation within and between related taxa represent the genetic history of a species. Shared polymorphisms, loci with identical alleles across species, are of unique interest as they may represent cases of ancient selection maintaining functional variation post-speciation. In this study, we investigate the abundance of shared polymorphism in the Daphnia pulex species complex. We test whether shared mutations are consistent with the action of balancing selection or alternative hypotheses such as hybridization, incomplete lineage sorting, or convergent evolution. We analyzed over 2,000 genomes from North American and European D. pulex and several outgroup species to examine the prevalence and distribution of shared alleles between the focal species pair,

SUBMITTER: Murray CS 

PROVIDER: S-EPMC11042267 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature