lecture16 - BioNB 2210: Lecture 16 Sept. 30, 2011 Lecture...

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BioNB 2210: Lecture 16 Sept. 30, 2011 Lecture 16: Sexual Selection I - Female Choice Professor Paul Sherman Learning Objectives 1. To understand the concept of sexual selection 2. To understand why in most species females are more choosy about mates than males 3. To understand females’ mate selection criteria, and how females benefit from using them A. Sexual selection refers to selection for traits that increase the mating success of some individuals over others of the same sex (male vs. male, female vs. female), whereas natural selection refers to selection for traits that increase the overall survival and reproductive success of both sexes. B. Darwin proposed two components of sexual selection: 1. Female choice of mates (intersexual or epigamic selection). 2. Male-male competition for mates (intrasexual selection), C. Both components of sexual selection arise from the fundamental asymmetry in the size of the gametes produced by the two sexes : females produce small numbers of relatively large gametes; males produce large numbers
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This note was uploaded on 08/27/2011 for the course BIONB 2210 taught by Professor Seeley during the Fall '10 term at Cornell University (Engineering School).

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lecture16 - BioNB 2210: Lecture 16 Sept. 30, 2011 Lecture...

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