# sexy son hypothesis

> English word · Noun

## Definitions
1. The hypothesis, in evolutionary biology, that a female animal's optimal choice among potential mates is a male whose genes will produce male offspring with the best chance of reproductive success, irrespective of the mate's capacity as a caregiver or any other direct benefits he can offer.

## Etymology
Coined by P. J. Weatherhead and R. J. Robertson in a paper published in The American Naturalist (1979).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sexy-son-hypothesis