A Researcher Finds That for a Particular Trait, the Correlation

Multiple Choice

A researcher finds that for a particular trait, the correlation between identical twins is greater than is the correlation between nontwin siblings. This result demonstrates that

A) environmental factors are important in the development of this trait.
B) genetic factors are important in the development of this trait.
C) genetic factors are not important in the development of this trait.
D) environmental factors are not important in the development of this trait.