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Sexual Selection

The nature of Sexual Selection

Inter and Intrasexual selection
Important feature of most sexually reproducing species is colour/vibrance ­ e.g peacock
Darwin came up with the 2 features of sexual selection
Intrasexual
Members of same sex compete with each other for the other sex
Victors pass on the…

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Evaluation

Logic of Sexual Selection
Cost of mate choice may impair survival
Rationale behind selection is random mating is stupid mating ­ pays to be choosy ­ genetic quality of
mate will determine half genetics of offspring
Lowquality mates (unattractive and unhealthy) more likely to produce unattractive, unhealthy
offspring
Joining…

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