Sexual selection, germline mutation rate and sperm competition.

ABSTRACT: BACKGROUND:An important component of sexual selection arises because females obtain viability benefits for their offspring from their mate choice. Females choosing extra-pair fertilization generally favor males with exaggerated secondary sexual characters, and extra-pair paternity increases the variance in male reproductive success. Furthermore, females are assumed to benefit from 'good genes' from extra-pair sires. How additive genetic variance in such viability genes is maintained despite strong directional selection remains an evolutionary enigma. We propose that sexual selection is associated with elevated mutation rates, changing the balance between mutation and selection, thereby increasing variance in fitness and hence the benefits to be obtained from good genes sexual selection. Tw

SUBMITTER: Moller AP 

PROVIDER: S-EPMC156621 | biostudies-literature | 2003 Apr

REPOSITORIES: biostudies-literature