For most traits,concordance values are higher in fraternal twins than in identical twins.

Question

Quizplus · Accepted Answer

This statement is actually false. Concordance values are actually higher in identical twins than in fraternal twins for most traits, because identical twins share 100% of their DNA while fraternal twins share only 50% on average. Therefore, if a trait has a strong genetic component, we would expect to see higher concordance values in identical twins than in fraternal twins.

For Most Traits,concordance Values Are Higher in Fraternal Twins Than