Author Question: Jack and Jill are twins. Because he is a boy, Jack's parents encourage him to run. However, they ... (Read 79 times)

plus1 · **on:** Jun 22, 2018

Jack and Jill are twins. Because he is a boy, Jack's parents encourage him to run. However, they discourage Jill from engaging in athletic activity. As a result, Jack is much faster at running up a hill than Jill. The difference in Jack and Jill's behavior is best explained by

a. nonshared environmental influences.
b. active gene-environment relations.
c. polygenetic effects.
d. niche-picking.

Question 2

From whom would you expect the biggest gains in height and weight over the next three years?

a. Ginger, who is 2 years old
b. Grant, who is 6 years old
c. Tina, who is 11 years old
d. Louise, who is 14 years old