Studies comparing the similarity of identical and fraternal twins who are raised together and apart are especially informative because
A)they tell us about the relative importance of the environment and genetic factors
B)they tell us only about the importance of the environment
C)they tell us only about the importance of genetic factors
D)they tell us what genes may be responsible for the occurrence of twins

Question

Quizplus · Accepted Answer

These studies allow researchers to disentangle the effects of environment and genetics on various traits and behaviors by comparing the similarities between identical twins (who share nearly all their genes) and fraternal twins (who share about half their genes), both when raised together and apart. This comparison provides insights into how much variation in a trait is due to genetic factors versus environmental factors.

Studies Comparing the Similarity of Identical and Fraternal Twins Who