To estimate heritability in humans,what do investigators usually examine?

Question

To estimate heritability in humans,what do investigators usually examine?​

Quizplus · Accepted Answer

Investigators usually examine the differences between twins and adopted children to estimate heritability in humans. This is because twins share more genetic material than non-twin siblings, and adopted children share their environment but not their genes with their adoptive parents. By comparing these groups, researchers can calculate the proportion of variance in a trait that can be attributed to genetic factors (heritability). Cultural and age differences may also be taken into account, but they are not the primary focus of heritability studies. Comparisons with other species may be used for evolutionary or comparative purposes, but not for estimating heritability in humans.

To Estimate Heritability in Humans,what Do Investigators Usually Examine?​

To Estimate Heritability in Humans,what Do Investigators Usually Examine?