Sexual selection, adaptation, and ornamental traits: the advantage of seeming fitter.
D000222:Adaptation, Physiological; D000367:Age Factors; D000818:Animals; D005075:Biological Evolution; D002452:Cell Count; D005260:Female; D006801:Humans; D008297:Male; D012641:Selection, Genetic; D012723:Sex; D013094:Spermatozoa