Exam 9: Sexual Selection

One of the indicators of sexual availability in primate females is _____, which is often accompanied by changes in color.

Compared with other primates, including humans, chimpanzee testicles are quite large; this is due to

In a woman's menstrual cycle, the _____ phase is when the egg is being developed, and the _____ phase is just after the egg is released.

In a multicultural study, Buss (1989) asked individuals at what age they preferred to marry. Males, on average, preferred to marry at 27.49 years of age to a women who was 2.66 years younger. When he look at actual marriage data, he found that men married

Discuss the features that characterize attractiveness in males and females.

Women who are ovulating and are seeking a short-term mate prefer a male with very masculine features such as more muscular bodies and prominent chins. This finding provides support for which theory?

In monogamous mating species of birds, a large proportion of males of reproductive age will find a mate. Thus, some females will be mating with males who are lower in genetic fitness. If these females have extra mating with more genetically fit males, then the

Although the waist-to-hip studies point to an underlying factor related to attractiveness, there were several potential confounds in their interpretation. Which of the following was NOT one of these?

_____ characteristics are those aspects of physiology that are necessary for sexual reproduction, such as the organs for the production of sperm or eggs.

The concept of _____ suggests that if a female is more willing to mate with a male with a certain trait, then that trait will be favored and passed on to the next generation; the outcome of such a process could eventually be an exaggeration, as in the case of the peacock's tail.

The slight differences between human male and female body size compared to other primate species suggests that humans evolved under a moderately _____ mating system.

Darwin presented an asymetrical picture of mating, which the female being less eager to mate than the male. He actually described the female as _____ and requiring courtship.

Recent research is beginning to describe features that characterize attractiveness in males and females. The basic idea is that the features of perceived beauty reflect

Pawlowski and Dunbar (1999) developed a measure of "market value" of males and females based on both number and characteristics of mates sought. In this report, it was determined that men in their _____ and women in their _____ were most in demand.

Compared with other primates, human male penises are quite large; this is due to

Research has shown that females are more likely than males to seek a mate who is wealthy; wealthy females place _____ emphasis on the financial status of their mate.

One form of sexual selection is known as _____, as when a female mates with the most-adorned peacock; this process leads to the evolution of characteristics in males that would help in ornamentation.

It has been shown that just the act of smelling a female's t-shirt will increase a male's _____ levels, and if the t-shirt is from an ovulating woman, the increase will be even greater.

Females choose males who possess _____, or outward manifestations, of underlying genetic fitness; peacock feathers are an example.

_____ characteristics are those aspects of physiology that are not necessary for sexual reproduction but have evolved to support the acquisition of mates, such as bright plumage in birds.