n Biology of Beauty, Cowley found that contemporaryfemales are attracted to males with broad foreheads and strong chins, and that this effect persisted across different cultures. How did Cowley explain this result? A. This is a trick question- this attraction is culturally relative B. Males compete for access to females by developing these features as a form of male-male competition C. There is no evidence that females really are differentially attracted to males with these features  D. Attraction to males with these features is adaptive for females  because males with these traits are usually sexually mature and have healthy immune systems E. Only some human cultures value these traits as attractive.

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Q: How and why do female mating preferences evolve?

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Q: Define  sexual selection?

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Q: Does the difference in gene expression explain the different sexual behaviors of the two species?

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Animal Behavior

Animal behavior can be defined as all the things that animals do. In response to a stimulus, an animal performs a certain fixed action pattern, or FAP, of behavior. This response occurs to make the animal more adaptable to change. So, behavior is generally a stimulus-oriented response. A behavior is an expression of the capabilities of the nervous system. A stimulus is determined by the environment, while the nervous system determines a response.