Suppose that the concordance values for a certain trait are very high for both MZ and DZ twins. This trait is likely due to
A) genetic influences.
B) environmental influences.
C) weak gene-environment interaction.
D) strong gene-environment interaction.
E) similar parenting styles.

Question

Quizplus · Accepted Answer

High concordance values for both MZ (monozygotic) and DZ (dizygotic) twins suggest that the trait is likely influenced by environmental factors, as both types of twins share similar environments but differ in genetic similarity.

Suppose That the Concordance Values for a Certain Trait Are