If a particular trait is highly heritable, we would expect to see the highest concordance rates among:
A) identical twins
B) fraternal twins
C) parents and children
D) unrelated individuals of the same age

Question

Quizplus · Accepted Answer

Heritability refers to the extent to which a trait is inherited versus acquired, thus presuming a genetic basis. In this example, the trait is highly heritable, so we presume a strong genetic basis. Because identical twins are genetically identical (share 100% of their genetic makeup) we would expect them to show the most similar characteristics.

If a Particular Trait Is Highly Heritable, We Would Expect