The heritability of a trait can be estimated by comparing groups of same-sex fraternal twins with groups of identical twins.

Question

Quizplus · Accepted Answer

This is true. By comparing the similarity of traits in identical twins, who share 100% of their DNA, and fraternal twins, who share approximately 50% of their DNA (like regular siblings), researchers can estimate how much of a trait's variability is due to genetics (heritability) and how much is due to environmental factors.

The Heritability of a Trait Can Be Estimated by Comparing