Twin studies have found that some psychological traits,such as intelligence,have a notable genetic contribution.This can be concluded from what evidence?
A) the similarity of identical twins is greater when they are reared apart than when they are reared together.
B) the similarity of fraternal twins raised together is greater than the similarity of identical twins raised apart.
C) the similarity of identical twins raised apart is greater than the similarity of fraternal twins raised apart.
D) the similarity of identical twins is essentially equal to that of fraternal twins.
Correct Answer:
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