Phrase guide

sexy son hypothesis

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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1

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Qualifier: evolutionary theory

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Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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