A Twin Study Is Conducted to Examine the Role of Genetics

Multiple Choice

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?

A) Twins who have lived together are more similar on the trait than are twins who have lived apart.
B) Twins who have lived apart are more similar on the trait than are twins who have lived together.
C) Identical twins are more similar on the trait than are fraternal twins.
D) Fraternal twins are more similar on the trait than are identical twins.