title: Human sexuality and evolution.
mesh_terms: D005075:Biological Evolution; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D012380:Role; D012723:Sex; D012737:Sex Factors; D012725:Sexual Behavior; D013739:Testosterone / Q000378:metabolism
chemical_list: D013739:Testosterone