In a quantitative genetic analysis of personality traits among monozygotic twins,it was found that:
1)Genetic differences play a small role in determining personality traits.
2)Genetic differences play a significant role in determining personality traits.
3)The broad-sense heritability is reasonably high in the 0.34-0.5 range.
A) 1
B) 2
C) 3
D) 1 and 2
E) 2 and 3

Question

Quizplus · Accepted Answer

Studies on monozygotic twins, who share nearly identical genetic makeup, have shown that genetics play a significant role in determining personality traits, with broad-sense heritability estimates often falling within the 0.34-0.5 range, indicating a substantial genetic contribution.

In a Quantitative Genetic Analysis of Personality Traits Among Monozygotic