Educação Superior::Ciências Biológicas::EcologiaEducação Superior::Ciências Biológicas::Biologia GeralPresents a lecture of Professor Stephen C. Stearns that speaks about natural selection. According the Professor sexual selection is a component of natural selection in which mating success is traded for survival. Natural selection is not necessarily survival of the fittest, but reproduction of the fittest. Sexual dimorphism is a product of sexual selection. In intersexual selection, a sex chooses a mate. In intrasexual selection, individuals of one sex compete among themselves for access to mates