Twin studies indicate that heredity makes a substantial contribution to
A) schizophrenia.
B) gender identity.
C) obsessive-compulsive disorder.
D) mate selection.
E) hobbies.

Question

Quizplus · Accepted Answer

Twin studies have consistently shown that genetics plays a significant role in the development of schizophrenia. Identical twins (who share 100% of their genes) have a much higher likelihood of both developing schizophrenia compared to fraternal twins (who share only 50% of their genes). This suggests a strong genetic influence on the disorder.

Twin Studies Indicate That Heredity Makes a Substantial Contribution to