The IQs of fraternal twins reared together are
A) more similar than the IQs of identical twins reared apart.
B) more similar than the IQs of other siblings reared together.
C) less similar than the IQs of parent and child.
D) related in all of these ways.

Question

Quizplus · Accepted Answer

Fraternal twins share about 50% of their genes, similar to other siblings, and therefore their IQs may be more similar than those of other siblings reared together. However, identical twins share 100% of their genes and are more likely to have similar IQs, even when reared apart. The IQs of parent and child are also likely to be more similar than the IQs of fraternal twins reared together.

The IQs of Fraternal Twins Reared Together Are