Fred and Ricky are identical twins.Lucy and Ethel are fraternal twins.If intelligence is primarily an environmentally-based trait,we would expect that
A)Lucy's and Ethel's IQ scores would be more similar to each other than Fred's IQ score would be to Ricky's.
B)Fred's and Ricky's IQ scores would be more similar to each other than Lucy's IQ score would be to Ethel's.
C)Lucy's and Ethel's IQ scores would be as similar to each other as Fred's IQ score is to Ricky's.
D)Fred and Ricky would both have lower IQ scores than either Lucy or Ethel.

Question

Quizplus · Accepted Answer

If intelligence is primarily environmentally-based, both sets of twins, regardless of being identical or fraternal, would have similar IQ scores due to sharing the same environment.

Fred and Ricky Are Identical Twins