green-beard effect

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Proper noun

1. {{lb|en|biology}} A [[hypothesis]] in [[evolutionary biology]] that explains [[selective]] [[altruism]] among individuals of a [[species]], involving [[preferential]] [[treatment]] of individuals with certain [[characteristic]]s.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.