Chapter 10.2: Variations in Sexual Behavior

Question 1

What is meant by the term “sexual selection”?

Answer 1

Evolution favors characteristics that make an individual more appealing to the opposite sex

Question 2

Evolutionary psychologists try to explain which of the following phenomena?

Answer 2

On average, men are more interested in multiple sex partners than women are

Question 3

Congenital adrenal hypertrophy results from a genetic disability to produce normal amounts of which hormone?

Answer 3

Cortisol

Question 4

A girl’s interest in boys’ toys correlates positively with which of the following?

Answer 4

Exposure to cortisol before birth

Question 5

What causes testicular feminization, in which a genetic makes look female?

Answer 5

Lack of receptors for testosterone

Question 6

When genetic males appear to be female at birth, but developed a male anatomy at puberty, what happened to their gender identity?

Answer 6

They switched to a male identity

Question 7

The conclusion that sexual orientation is partly heritable depends mainly on what evidence?

Answer 7

Comparisons of monozygotic and dizygotic twins

Question 8

Which of the following would increase the probability that a boy will develop a homosexual orientation?

Answer 8

Having a biological older brother, even if he did not live in the same house

Question 9

In what way was INAH-3 distinctive for most of the homosexual men, in comparison to heterosexual men, in LeVay’s study and the follow-up research?

Answer 9

This nucleus had neurons with smaller than average volume