2. In Chapter 5, the animals are unsure of _____________.
(a) What their mate thinks of them.
(b) Passing desirable genes to offspring.
(c) The male knowing if the egg is his.
(d) Being able to find a suitable mate.

3. How does evolution work?
(a) Change is continuous.
(b) Very slowly, over thousands of years.
(c) Without competition between organisms.
(d) Different adaptations of an individual which give a reproductive edge.

4. Due to the ________________, traits that increase reproductive successes will spread and those that do not will expire.
(a) Evolutionary arms race.
(b) Low pregnancy rate.
(c) Slow genetics of men.
(d) High pregnancy rate.

5. What is the primary part in sexual reproduction?
(a) Combining and outcrossing genes.
(b) Combining all genes.
(c) Outcrossing genes.
(d) Killing genes that are not yours.

6. From a biologist's point of view, sexual reproduction is more _________ than asexual reproduction.
(a) Expensive.
(b) Risky.
(c) Unnecessary
(d) Annoying.

7. In which cultures are male babies especially prized?
(a) Chinese.
(b) Chinese and Indian.
(c) American.
(d) Indian.

8. Although it becomes clear that sex is necessary to avoid parasites, what question remains?
(a) Whether or not sex is the best way to reproduce.
(b) How sex works.
(c) Why sex works the way it does.
(d) Why people enjoy sex.

9. What happens if a virus attacks a population of clones?
(a) The clones attack one another in order to survive.
(b) The virus will kill only the weakest clones.
(c) The clone population will be wiped out.
(d) The clone population will effectively kill the virus.

10. To women, attractiveness in a male signifies _____________.
(a) The ability to support her and future children.
(b) Infidelity in the relationship.
(c) Excessive amounts of sperm.
(d) Good genes.

11. What is the primary purpose of sexual reproduction that is very beneficial for all offspring?
(a) Making many children.
(b) Slowness of evolution.
(c) Speed of evolution.
(d) Meeting a soul mate.

12. In 1970, __________ argued that the individual is merely a container for genes.
(a) Charles Darwin.
(b) Russel Wallace.
(c) Jean-Baptiste Lamarck.
(d) Richard Dawkins.

13. In an attempt to "outwit" these killers, organisms engage in _____________.
(a) Fission.
(b) Camouflage.
(c) Sexual reproduction.
(d) Asexual reproduction.

14. In the author's opinion, what is not the primary goal of an organism?
(a) Survival.
(b) Killing one another.
(c) Evolution.
(d) Reproduction.

15. Instead of scientists concentrating on why humans are the way they are, they should concentrate on _________.
(a) Where humans live.
(b) Why humans are the way they are.
(c) A way to study humans without them knowing.
(d) How they got to be the way they are.