To estimate trait heritability, researchers are most likely to make use of

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To estimate trait heritability, researchers commonly use twin studies. Twin studies compare the similarity of identical twins (who share 100% of their genes) and fraternal twins (who share only 50% of their genes) in terms of a particular trait. By comparing the degree of similarity between these two types of twins, researchers can estimate the proportion of variability in the trait that is attributable to genetic factors (i.e., the heritability).

To Estimate Trait Heritability, Researchers Are Most Likely to Make