Which of the following examples best exemplifies phenotypic plasticity? O A population of Ground Squirrels relocate their den on the other side of a fence inside of a nature preserve, allowing them to avoid extermination by landowners in their previous den. O Mother Eastern Bluebirds with agressive personalities pass these aggressive traits to their offspring allowing the next generation to better defend their territories. A Coyote learns that sidewalks offer relatively safe passage through a neigborhood compared to walking on the street. A Green-Cheeked Parakeet discovers a new nut tree in its habitat that produces a hard-shelled nut and its beak thickness increases in size.

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Q: Distinguish between intrasexual and intersexual selection.

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Q: Which of the following is not a violation of Hardy-Weinberg assumptions?

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A: Different types of selection affect variations in a given population.

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Q: antagonistic pleiotropy hypothesis

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Q: Explain frequency-dependent selection in your own words.

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Sexual Motivation

Sexual motivation refers to a person's overall desire for sexual activity. It is an unusual motivation. Generally, among lower animals, the term 'drive' is commonly referred to as sexual motivation. It means a certain internal force drags the animal to be involved in reproductive behavior. On the contrary, humans are not simply driven by any internal force; rather, the sexual motivation in humans is due to several factors such as biological (hormones, genes), environmental (familial upbringing, chemical exposure) and physiological factors (culture, desire) which further determine engagement in sexual activities.