One reason twin studies produce higher estimates of heritability than some other methods may be that the twin studies
A) capture nonadditive effects of genetics.
B) often incorrectly classify dizygotic and monozygotic twins.
C) are based on small samples.
D) overlook gender differences.

Question

Quizplus · Accepted Answer

Twin studies are able to capture the nonadditive effects of genetics, which means that the combined influence of multiple genes working together may have a greater impact on a trait than any individual gene. This can result in higher estimates of heritability compared to methods that only look at individual genes or environmental factors.

One Reason Twin Studies Produce Higher Estimates of Heritability Than