Which of the following results is consistent with a trait that has a high heritability?
A) identical twins are less alike than fraternal twins
B) adopted children resemble their biological parents more than their adoptive parents
C) unrelated children are as much alike as are brothers and sisters
D) brothers are more alike than are sisters

Question

Quizplus · Accepted Answer

Heritability refers to the proportion of a trait, such as intelligence, that is thought to result from inherited, genetic factors. If a trait is highly heritable, we would expect persons who are more genetically similar to one another to show more similarity on a trait than persons who are less genetically similar to one another. In this example, adopted children share more genes with their biological parents than with their adoptive parents, so should resemble the biological parents more.

Which of the Following Results Is Consistent with a Trait