Rate of molecular evolution of the seminal protein gene SEMG2 correlates with levels of female promiscuity

Abstract

Postcopulatory sperm competition is a key aspect of sexual selection and is believed to drive the rapid evolution of both reproductive physiology and reproduction-related genes. It is well-established that mating behavior determines the intensity of sperm competition, with polyandry (i.e., female promiscuity) leading to fiercer sperm competition than… (More)
DOI: 10.1038/ng1471

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