Week 7- Sexual Selection
Week 7- Sexual Selection Biology 152
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This 1 page Class Notes was uploaded by BettyAnn Mead on Friday March 13, 2015. The Class Notes belongs to Biology 152 at University of Massachusetts taught by Peteh in Winter2015. Since its upload, it has received 49 views.
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Date Created: 03/13/15
Sexual Selection 0 A special case of natural selection 0 SURVIVAL IS NOT ENOUGH o Advantage in mating must be ABOVE AND BEYOND the cost to survive Darwin s Other Big Idea Elaborate males cryptic females Males appear to compete for females 0 Females appear to choose males 0 Enhanced ability to obtain mates Occurs when individuals in a population differ in ability to attract mates Sexual Selection Pattern and Process 0 Pattern Seems to act more strongly on males traits that respond to sexual selection are more elaborate in males Sexual dimorphism Process Consequence of differences between the sexes in parental investment The Connection Between Male Dominance and Reproductive Successs Result Sexual selection on males for qualities such as large size that enhance ghting ability BUT in many species subordinate males may secure matings by alternate means
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