Exam 4: Genes, Evolution, and Behaviour

The theory proposed by Robert Trivers (1972) used sex differences in parental investment to explain different mating systems. If the females compete with one another for access to males and are larger, stronger, more active, and more aggressive than the males of the species, this would be typical of a ___________________ mating system.

In which mating system are the females of the species actually larger and more aggressive than the males of the species?

The portion of the chromosome that carries the specific hereditary units of information are called

How might genes influence the tendency to enjoy reading or participating in organized sports?

Dr. Erickson studied a number of monozygotic twins and reports that the heritability of friendliness is -1.35. You do not believe him. Why?

What evidence has indicated the importance of environmental factors in intelligence?

Research on the consistency of gender differences in mate preference has determined that

Which of the following statements is FALSE?

The theory proposed by Robert Trivers (1972) used sex differences in parental investment to explain different mating systems. If females of a species have high parental investment and necessary male parental investment is low, Trivers' theory predicts that _______________ would be most common.

Polygenic transmission occurs when several gene pairs interact to influence a single phenotypic trait.

George has blue eyes, but both his parents have brown eyes. How can this be?

Identical twins, Rita and Nita, were raised by different adoptive families. With regards to their personalities, we can expect them to be _______________.

Adapting to recurring environmental changes, such as developing bipedal locomotion when food sources become scarce _______.

According to kin selection theory, which of the following should you be least likely to help?

Let's say that your friend's house was on fire. You are likely to run in a try to save her, even though you are putting your own life in danger. From a genetic viewpoint, you would do this because of

You meet someone at a party and notice that they have blonde hair. What do we know for sure about this person's hair?

Which of the following statements is FALSE?

Let's imagine that your house was on fire. You only have time to save one of your family members and yourself. You are most likely save your identical twin. Why?

Which of the following situations cannot be explained by evolutionary theory?

The observable characteristics produced by a particular genetic endowment are called ___________.