Question 1

Chimpanzees and gorillas of Africa are referred to as _____ because they are larger than gibbons and siamangs.

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Question 2

Like other chimpanzees, bonobo society is described as _____; that is, bonobos move in small groups that may constantly change during the day.

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Question 3

Describe the social and mating system of each of the following primates, all close relatives to humans: gibbons, gorillas, chimpanzees, and bonobos. In what ways is the human social and mating system similar and different from those of related species?

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Question 4

Gibbons and siamangs of Southeast Asia are referred to as _____ because they are smaller than chimpanzees and gorillas.

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Question 5

Discuss the various ways males compete with other males for mates, illustrating with examples from the text.

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Question 6

Explain the difference between natural selection and sexual selection. When the two conflict, which wins out?

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Question 7

Gorillas typically move about using all four limbs in a style of locomotion known as _____.

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Question 8

Male chimpanzees establish a _____ in which one male seeks to limit access to the females in his group; however, the females often mate with a number of males during estrus.

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Question 9

Among shorebirds of the Arctic Circle, the female seeks out and courts the males; once she has laid eggs, the male incubates them while the female seeks out and courts additional males. This situation is known as ____.

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Question 10

The term _____ is used to describe the situation in which one male mates with multiple females.

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Question 11

The _____ is a type of chimpanzee that also lives in central Africa; unlike other mammals that show sexual activity only during a few days of the female's cycle, the females of this species are almost continuously sexually active.

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Question 12

There are basically four types of mating systems: one male with one female (monogamy), one male with multiple females (polygyny), one female with multiple males (polyandry), and multiple males with multiple females (promiscuity). Using example species from the text, describe how these mating systems are employed.

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Question 13

What is the Red Queen hypothesis? In what way is sex like a lottery?

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Question 14

_____ is the general term used to describe the situation in which one member of one sex is paired with more than one member of the opposite sex.

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Quiz 8: Sex and Gender