Why reproduce sexually?
D000818:Animals; D001042:Aphids; D005075:Biological Evolution; D005260:Female; D005298:Fertility; D005838:Genotype; D007448:Invertebrates; D008297:Male; D008540:Meiosis; D008954:Models, Biological; D010125:Ostreidae; D012098:Reproduction; D012641:Selection, Genetic; D012723:Sex; D014197:Trees