Relating to characteristics or behaviors that have evolved specifically to attract mates or promote reproduction.
From Greek 'epi' (upon) + 'gamos' (marriage) + '-ic' (adjective suffix). The term describes traits that function in the context of finding or attracting a mate.
The bright colors of a peacock's tail and the elaborate songs of birds are epigamic traits—they're not useful for survival and are actually costly, but they evolved because females find them attractive, making males with these traits more successful at reproducing.
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