When concordance rates are higher among monozygotic twins than dizygotic twins, this indicates which of the following?

Question

Quizplus · Accepted Answer

When concordance rates are higher among monozygotic twins than dizygotic twins, it suggests that there is a genetic basis to the trait or condition being studied. This is because monozygotic twins share 100% of their genetic material, while dizygotic twins share, on average, 50% of their genes. If a trait or condition is more common in monozygotic twins than dizygotic twins, it suggests that genetics plays a role in its development. However, the fact that concordance rates are not 100% among monozygotic twins indicates that there is also an environmental component to the trait or condition.

When Concordance Rates Are Higher Among Monozygotic Twins Than Dizygotic