Transitions in sex determination mechanisms through parental and sexual antagonism.

ABSTRACT: Sex chromosomes carry the sex-determining locus, causing them to be differently transmitted to and from females and males. These differences lead them to be selected upon in different ways, and hence they are predicted to become enriched for sexually- and parentally-antagonistic genes. Sexually-antagonistic genes have opposing fitness effects in females versus in males; parentally-antagonistic genes have opposing fitness effects when inherited maternally versus paternally. Sexually-antagonistic selection can drive sex determination transitions, whereby an autosome pair becomes a sex chromosome pair in lieu of the ancestral sex chromosomes. Whether parentally-antagonistic selection can similarly drive sex determination transitions remains unknown. I present a model to investigate the potent

SUBMITTER: Schenkel MA 

PROVIDER: S-EPMC11528055 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature