On the basis of twin studies and other kinship evidence, researchers estimate that about of the differences in iq among children can be traced to their genetic makeup.

The correct answer is about half of the difference in IQ. It is because when associated with genetic make-up, about half of the difference in IQ are likely to be trace to the children’s genetic make-up. This could be referred to the nature, nurture, and iq controversy.

it is a bolivia your welcome

it is going to be account a