Which pair of individuals is likely to have the MOST similar IQ scores?
A) Janna and Lauren, who are biological mother and daughter
B) Jessie and Jenny, who are biological sisters
C) Michael and David, who are fraternal twins
D) Greg and Craig, who are identical twins

Question

Quizplus · Accepted Answer

Identical twins have nearly identical genetic material, which plays a significant role in determining IQ. Fraternal twins may share some genetic material and may have similar upbringings, but are not guaranteed to have similar IQ scores. Biological mother and daughter and biological sisters may also share some genetic material, but other factors such as different environmental experiences may have a greater impact on their IQ scores.

Which Pair of Individuals Is Likely to Have the MOST