BIOL 3040 : Biol 3040 Exam 04 And Final Notes
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Chapter 17: sexual selection: good genes, offspring health, survival, fig 17. 1. Interactions among individuals of the opposite sex rather than the environment: feathers are a proxy/signal of the male"s genes, females preferred more elaborate feathers. Intersexual selection: individuals of one sex select among individuals of the other sex as mates. In species with internal gestation, females are usually the only sex to devote energy to offspring before they are born: male and female reproductive success. Biol 3040 chris gregg exam 4/final notes: fig 17. 3, reproductive success for male and female bitterling fish, most males did not produce many offspring while some males did produce offspring. More intense color = healthier and higher female choice. Cheaters will win out in these models: trait-group selection, trait group: group in which all individuals affect one another"s fitness, natural selection operates at two levels: within group and between group, between-group selection favors cooperators.
