Phenotypic effects of the Y chromosome are variable and structured in hybrids among house mouse recombinant lines.

ABSTRACT: Hybrid zones between divergent populations sieve genomes into blocks that introgress across the zone, and blocks that do not, depending on selection between interacting genes. Consistent with Haldane's rule, the Y chromosome has been considered counterselected and hence not to introgress across the European house mouse hybrid zone. However, recent studies detected massive invasion of M. m. musculus Y chromosomes into M. m. domesticus territory. To understand mechanisms facilitating Y spread, we created 31 recombinant lines from eight wild-derived strains representing four localities within the two mouse subspecies. These lines were reciprocally crossed and resulting F1 hybrid males scored for five phenotypic traits associated with male fitness. Molecular analyses of 51 Y-link

SUBMITTER: Martincova I 

PROVIDER: S-EPMC6540687 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature