Which of the following is true concerning the intelligence scores of identical twins?
A) They are very similar.
B) They resemble those of dizygotic twins.
C) They are unrelated to their natural parents.
D) They indicate intelligence is mostly influenced by environment.

Question

Quizplus · Accepted Answer

Identical twins share the same genetic material, so their intelligence scores tend to be very similar. Studies have shown that identical twins raised apart still have highly correlated intelligence scores, indicating that genetics play a significant role in intelligence.

Which of the Following Is True Concerning the Intelligence Scores