Chapter 4 Pretest

Question 0

Twin studies of heritability have found that so-called identical (monozygotic) twins may be different in important ways

Answer 0

True

Question 1

Epigenetics deals with how experiences can turn genes on and off

Answer 1

True

Question 2

Kin selection - protecting those who are closely related to you - may provide an evolutionary explanation for altruism

Answer 2

True

Question 3

Studies of the hippocampus suggest that, just as our bodies replace skin cells, we replace about 10% of neurons each year

Answer 3

False

Question 4

Axons make connections at random, but the connections that are not useful get pruned

Answer 4

False

Question 5

Neurotrophins control the survival of neurons in the brain

Answer 5

False

Question 6

Studies of professional musicians have found thicker gray matter in several cortical areas.

Answer 6

True

Question 7

Adolescents show weaker responses in areas of the prefrontal cortex responsible for inhibiting behaviors

Answer 7

True

Question 8

When a mature mammalin brain is injured, there is a flurry of axons sprouting to replace damaged axons

Answer 8

False

Question 9

Phantom limbs develop when the relevant portion of the somatosensory cortex reorganizes and becomes responsive to alternative inputs

Answer 9

True