Suppose for a particular personality trait, dizygotic twins both share the trait 13% of the time while monozygotic twins share the trait 14% of the time. The heritability for this trait would be close to
A) 0
B) .13
C) .14
D) 1

Question

Quizplus · Accepted Answer

Heritability is estimated based on the difference in concordance rates between monozygotic (identical) and dizygotic (fraternal) twins. In this case, the rates are almost identical (14% for monozygotic and 13% for dizygotic twins), suggesting that genetic factors do not significantly contribute to the trait. Heritability is close to 0.

Suppose for a Particular Personality Trait, Dizygotic Twins Both Share