title: Sperm competition and the evolution of reproductive systems.
authors.affiliation: Evolutionary Biology, Bielefeld University, Morgenbreede 45, 33615 Bielefeld, Germany steven.ramm@uni-bielefeld.de.
authors.forename: Steven A
authors.initials: SA
authors.lastname: Ramm
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005260:Female; D005306:Fertilization; D006801:Humans; D008297:Male; D012098:Reproduction; D012641:Selection, Genetic; D012726:Sexual Behavior, Animal; D013084:Sperm-Ovum Interactions; D013094:Spermatozoa / Q000502:physiology*; D014566:Urogenital System / Q000502:physiology*