Jan and Paul are fraternal twins who are being raised together.Mark and Thomas are identical twins who are being raised in different families,but Mark is being raised with Jan and Paul.Which of the following is true in terms of their weights?
A) Jan and Paul are more likely to be similar than are Mark and Thomas.
B) Mark will be more similar to Jan and Paul than to Thomas.
C) Mark is more likely to be similar to Thomas,even though they are being raised apart.
D) Thomas will be more similar to his family than to Mark.

Question

Quizplus · Accepted Answer

Mark is more likely to be similar to Thomas because identical twins share more genetic material than fraternal twins, making their weights more influenced by genetics than environment.

Jan and Paul Are Fraternal Twins Who Are Being Raised