Tim and Jim are identical twins who were raised apart. Ned and Ed are fraternal twins who were raised together. Which pair of twins will have more similar IQ scores, if either?
A) Tim and Jim
B) Ned and Ed
C) Their IQs will be the same, because environment and genetics interact equally across both cases.
D) It is impossible to answer based on the given information.
E) All twins have the same IQ

Question

Quizplus · Accepted Answer

Identical twins have nearly identical genetic material, which can strongly influence their IQ scores. While environment can also play a role, the fact that Tim and Jim are identical twins means that they are more likely to have very similar IQ scores, even though they were raised apart. On the other hand, fraternal twins like Ned and Ed share only about 50% of their genetic material, making it less likely that they will have similarly high IQ scores.

Tim and Jim Are Identical Twins Who Were Raised Apart