A man's wife is pregnant for the third time.One child was born with cystic fibrosis and the other child is healthy.The man wonders what the chance is that this child will have cystic fibrosis.This type of testing is known as which of the following?
A) Occurrence risk
B) Recurrence risk
C) Predictive testing
D) Predisposition testing

Question

Quizplus · Accepted Answer

The couple already has a child with a genetic disease; therefore,they will be given a recurrence risk test.If a couple has not yet had children but are known to be at risk for having children with a genetic disease,they are given an occurrence risk test.This couple already has a child with a genetic disorder.Predictive testing is used to clarify the genetic status of an asymptomatic family member.Predisposition testing differs from presymptomatic testing in that a positive result does not indicate 100% risk of a condition developing.

A Man's Wife Is Pregnant for the Third Time