Deanna and Errol are nonidentical twins separated at birth and brought up in different households.Their IQ scores are most likely ____.
A) almost identical
B) the same as if they were brought up in the same home
C) the same as any siblings reared apart
D) the same as those adults rearing them

Question

Quizplus · Accepted Answer

Nonidentical twins, like any siblings, share some genetic material, but not as much as identical twins. Their IQ scores are likely to reflect this genetic sharing, similar to any siblings reared apart, where both genetics and different environmental factors play roles.

Deanna and Errol Are Nonidentical Twins Separated at Birth and Brought