Which of the following is the strongest piece of evidence showing that genetic factors influence intelligence (as measured by IQ tests)?

Question

Quizplus · Accepted Answer

The fact that identical twins reared apart are more alike than fraternal twins reared together suggests that genetics plays a stronger role in intelligence than environmental factors. Identical twins share 100% of their genes, while fraternal twins share only 50% on average, so the fact that identical twins reared apart are more similar than fraternal twins reared together supports the idea that genetics plays a significant role.

Which of the Following Is the Strongest Piece of Evidence