Author Question: Even when twin studies find that monozygotic twins have higher concordance rates than dizygotic ... (Read 123 times)

aabwk4 · **on:** Jun 22, 2018

Even when twin studies find that monozygotic twins have higher concordance rates than dizygotic twins, it is possible these results are not due to genetics but to the possibility that

a. DZ twins are usually treated very similarly.
b. MZ twins may be treated more similarly than DZ twins.
c. MZ twins are easier to locate and study.
d. DZ twins are more likely to live in similar environments.

Question 2

As more genes are involved in determining a trait, what happens to the distribution of the trait in the general population?

a. It occurs more often in each generation.
b. It occurs less frequently with each generation.
c. The trait tends to be distributed in a bimodal manner.
d. The trait tends to be distributed as a normal distribution.