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The possible role of pheromones in humans remains controversial, unlike many other species in which they are conclusively associated with social and sexual behaviors. Still, suggestive evidence exists for the impact of putative testosterone-related pheromones (e.g., androstenone) on human mood and attractiveness to others. Researchers in Scandinavia have now examined genetic variation in pheromones and sociosexual behavior.
Two groups reported their sociosexual behavior, including numbers of sex partners and one-night stands, and underwent genotyping of polymorphisms in two genes expressed in the main olfactory epithelium. Sample one involved 3676 twins (women, 58%; mean age, 26; 1199 monozygotic twins); the replication sample involved 1214 …