A twin study is conducted to examine the role of genetics and environment on the fondness of individuals for chocolate. Which result would lead to the conclusion that genetic factors are important in the development of this trait?

Question

Quizplus · Accepted Answer

If identical twins are more similar on the trait than fraternal twins, it suggests that genetics play a significant role in the development of the trait. This is because identical twins share 100% of their genetic material, whereas fraternal twins share only 50% on average. Therefore, if identical twins are more similar than fraternal twins, it suggests that genetic factors are playing a stronger role in the trait than environmental factors.

A Twin Study Is Conducted to Examine the Role of Genetics