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The original was posted on /r/science by /u/SilverBackBonobo on 2025-01-31 11:27:09+00:00.

Original Title: Homosexuality is estimated to be about 30% heritable, with genetic factors potentially increasing mating success in heterosexual males. Outside of humans, exclusively homosexual behavior is primarily observed in domestic rams, though macaques may exhibit similar sexual orientations to humans.