title: Comparative biology. Female organs revealed as weapons in sexual arms race.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Pennisi
mesh_terms: D000717:Anatomy, Comparative; D000818:Animals; D005075:Biological Evolution; D017812:Colubridae / Q000033:anatomy & histology / Q000502:physiology; D003307:Copulation; D005260:Female; D005836:Genitalia, Female / Q000033:anatomy & histology* / Q000502:physiology*; D008297:Male