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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3, The Evolution of Human Sexuality.

Multiple Choice Questions

1. How do scientists know that about four millions of years ago the first proto-human hominids began to walk upright?
(a) The food eaten by the proto-human hominids is different than previous species.
(b) Footprints have been left by these proto-human hominids.
(c) The skeletons of chimpanzees have been found from the same time period.
(d) From analyzing skeletal limb changes discovered in the fossil record.

2. In most primates, sexually receptive females exhibit what?
(a) Aggressive behaviors.
(b) Brightly colored and swollen genitalia.
(c) Certain behaviors.
(d) Hidden estrus.

3. What is the size ratio between a male and female in monogamous species?
(a) They are usually the same size.
(b) The female is usually larger than the male.
(c) The male is usually larger than the female.
(d) The size is not of importance.

4. Both chimps and humans share what percent of their DNA in common with the gorilla species?
(a) 97.7.
(b) 90.7.
(c) 87.7.
(d) 92.7.

5. How does the author believe that humans and chimps should properly be considered to be?
(a) Two species in two genera.
(b) One species in two genera.
(c) One species within a single genus.
(d) Two species within a single genus.

Short Answer Questions

1. When do chimpanzees diverge from pygmy chimpanzees?

2. Why is human sexuality an unusually developed trait for primates?

3. With what does the chapter conclude?

4. To what is the pair bonding found among humans probably due?

5. H. erectus was not the first upright hominid but bears the appellation. Why?

(see the answer key)

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