Differences in the rates of concordance for monozygotic versus dizygotic twins has suggested a strong genetic component for schizophrenia and ______.
A) posttraumatic stress disorder
B) major depression
C) phobia
D) postconcussion syndrome

Question

Quizplus · Accepted Answer

The rate of concordance for major depression is also higher in monozygotic twins compared to dizygotic twins, indicating a genetic component. Schizophrenia and major depression are both classified as mood disorders and are believed to have a genetic basis. Posttraumatic stress disorder, phobia, and postconcussion syndrome are not mood disorders and do not have as strong a genetic component.

Differences in the Rates of Concordance for Monozygotic Versus Dizygotic