Anisogamy explains why males benefit more from additional matings.

Henshaw, Jonathan M; Jones, Adam G; Schärer, Lukas · Nat Commun · 2022

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Abstract

Why do males typically compete more intensely for mating opportunities than do females and how does this relate to sex differences in gamete size? A new study provides a formal evolutionary link between gamete size dimorphism and ‘Bateman gradients’, which describe how much individuals of each sex benefit from additional matings.

Medical subject headings