Anthropology5_Sexual_Selection

Anthropology5_Sexual_Selection - Anthro5 18:05...

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Anthro 5 18:05 Sexual Selection: the problem Why are there two morphs (forms), female and male Don’t the same ecological challenges confront both sexes? Food Predators Pathogens Sexual Selection: the problem Why are there two morphs (forms), female and male. Why does one sex have ecologically useless traits: handicaps? Why in almost every species is it the male who has these handicaps? Sexual Selection: defined Selection of mating success Natural Selection     o Survival o Fertility o Mating (sexual selection) Sexual Selection Why are “handicaps” only evolved in one sex? Used in competition for mating o Courting o Fighting Why are matings not equally important to the fitness of males and females Female Reproductive cycle
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Ovulation Copulation Gestation Birth Lactation Weaning Rebuilding reserves for ovulation Sexual Selection Because of disproportionate female parental investment, (in mammals) 
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Anthropology5_Sexual_Selection - Anthro5 18:05...

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