Sex and evolution.
D000818:Animals; D005075:Biological Evolution; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D008540:Meiosis; D008954:Models, Biological; D012098:Reproduction; D012641:Selection, Genetic; D012723:Sex; D012727:Sex Characteristics; D012725:Sexual Behavior