The empiric risk that the monozygotic twin of a person with cleft lip also has cleft lift is ___ times the risk to a member of the general population who has no relatives with cleft lip.
A) 4
B) 40
C) 100
D) 400
E) 0

Question

Quizplus · Accepted Answer

The empiric risk for a monozygotic twin of a person with cleft lip is approximately 40 times higher than the risk to a member of the general population. Therefore, the answer is choice D, which represents a risk that is 400 times greater than that of the general population.

The Empiric Risk That the Monozygotic Twin of a Person