Weston and Roman are identical twins. Both are successful tax attorneys that have high-stress jobs. Their diets are very similar, however Roman is obese and Weston is at a relatively normal weight. Why is there a discrepancy in their weight when other areas are so similar?
A. It is likely that Roman’s genetic expression for obesity manifested, while Weston’s did not.
B. It is likely that Weston’s genetic predisposition toward thinness is expressed, whereas Roman’s has not.
C. It is likely that they are fraternal, rather than identical twins or they would weigh the same.
D. It is likely that Weston’s response to stress differs from Roman’s, which has a bearing on how his fat cells behave and grow.
Answer: D
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