Cross-sex genetic correlations for fitness and fitness components: Connecting theoretical predictions to empirical patterns.

ABSTRACT: Sex differences in morphology, physiology, development, and behavior are widespread, yet the sexes inherit nearly identical genomes, causing most traits to exhibit strong and positive cross-sex genetic correlations. In contrast to most other traits, estimates of cross-sex genetic correlations for fitness and fitness components ( r W fm ) are generally low and occasionally negative, implying that a substantial fraction of standing genetic variation for fitness might be sexually antagonistic (i.e., alleles benefitting one sex harm the other). Nevertheless, while low values of r W fm are often regarded as consequences of sexually antagonistic selection, it remains unclear exactly how selection and variation in quantitative traits interact to determine the sign and magnitude of r W fm ,

SUBMITTER: Connallon T 

PROVIDER: S-EPMC6546386 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature