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Darwinian sex roles confirmed across the animal kingdom [Science Advances]

Keywords : anisogamy, mating success, parental care, sexual dimorphism, sexual selection, bateman’s principles

par Frédéric Magné - publié le

Since Darwin’s conception of sexual selection theory, scientists have struggled to identify the evolutionary forces underlying the pervasive differences between male and female behavior, morphology, and physiology. The Darwin-Bateman paradigm predicts that anisogamy imposes stronger sexual selection on males, which, in turn, drives the evolution of conventional sex roles in terms of female-biased parental care and male-biased sexual dimorphism. Although this paradigm forms the cornerstone of modern sexual selection theory, it still remains untested across the animal tree of life.(...)

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