title: Lovers, not fighters?
authors: John
authors: J
authors: Whitfield
mesh_terms: D000349:Africa; D000818:Animals; D041321:Chromosomes, Human, X / Q000235:genetics; D041322:Chromosomes, Human, Y / Q000235:genetics; D003433:Crosses, Genetic; D015186:Hominidae / Q000235:genetics*; D006801:Humans