Assume that intelligence is determined more by genetics than environment.If that were the case,which of the following statements would be correct?
A)Fraternal twins Bob and Barry would be more similar in their IQ scores than identical twins Tim and Tom.
B)Identical twins Tim and Tom would be more similar in their IQ scores than fraternal twins Bob and Barry.
C)Identical twins Tim and Tom would be just as similar in their IQ scores as fraternal twins Bob and Barry.
D)Adopted children Mark and Mac would be more similar in IQ scores to their adoptive parents than to their biological parents.

Question

Quizplus · Accepted Answer

If intelligence is determined more by genetics than environment, then identical twins who have the same genetics would be more similar in their IQ scores than fraternal twins who only share half of their genes. Therefore, option B is correct. Option A is incorrect because fraternal twins still only share 50% of their genes and are not as genetically similar as identical twins. Option C is also incorrect because identical twins have the same genes, which is a stronger genetic influence than fraternal twins. Option D is not correct because adopted children do not share genes with their adoptive parents, so there would be no genetic influence from them on the child's IQ scores.

Assume That Intelligence Is Determined More by Genetics Than Environment