What do twin studies indicate about the role of genes in personality?
A)Heredity plays an important role in personality.
B)Dizygotic twins are more likely than monozygotic twins to share personality traits.
C)Personality is almost entirely determined by parenting and other environmental factors.
D)Personality appears to be related to two different copies of a serotonin transporter gene.

Question

Quizplus · Accepted Answer

Twin studies indicate that heredity plays a significant role in personality. Monozygotic twins (who share 100% of their genes) tend to have more similar personalities than dizygotic twins (who share only 50% of their genes), suggesting that genes play a role in shaping personality.

What Do Twin Studies Indicate About the Role of Genes