title: Heterotypical sexual behavior: implications from variations.
mesh_terms: D000728:Androgens / Q000502:physiology; D000818:Animals; D004967:Estrogens / Q000502:physiology; D005260:Female; D014644:Genetic Variation; D008297:Male; D011187:Posture; D011372:Progestins / Q000502:physiology; D012727:Sex Characteristics; D012726:Sexual Behavior, Animal / Q000502:physiology*
chemical_list: D000728:Androgens; D004967:Estrogens; D011372:Progestins