If Monozygotic and Dizygotic Twins Have the Same Concordance Value

Multiple Choice

If monozygotic and dizygotic twins have the same concordance value for a trait, which of the following is TRUE?

A) Genetic factors are more important than environmental factors for the trait.
B) The trait is probably influenced by numerous genes.
C) The trait will more likely appear in males than in females.
D) The trait will be passed on from fathers to their daughters but not to their sons.
E) The trait is entirely due to environmental factors.