When identical twins who are raised apart, in separate adoptive homes, show different susceptibilities to a given psychological disorder, it indicates that:
A)environmental factors influence the expression of the disorder
B)genetic factors have more influence than environmental factors in the disorder
C)both genetics and environmental factors contribute equally to the disorder
D)neither genetic factors nor environmental factors contribute to the disorder

Question

Quizplus · Accepted Answer

Identical twins share the same genetic makeup, so if they exhibit different susceptibilities to a psychological disorder, it suggests that environmental factors are at play. The fact that they were raised in separate adoptive homes further supports this conclusion, as it means they were exposed to different environmental factors.

When Identical Twins Who Are Raised Apart, in Separate Adoptive