Which infant is more likely to have Rh incompatibility?
A)Infant of an Rh-negative mother and a father who is Rh positive and homozygous for the Rh factor
B)Infant who is Rh negative and whose mother is Rh negative
C)Infant of an Rh-negative mother and a father who is Rh positive and heterozygous for the Rh factor
D)Infant who is Rh positive and whose mother is Rh positive

Question

Quizplus · Accepted Answer

If the mother is Rh negative and the father is Rh positive and homozygous for the Rh factor,all the offspring will be Rh positive.Only Rh-positive offspring of an Rh-negative mother are at risk for Rh incompatibility.Only the Rh-positive offspring of an Rh-negative mother are at risk.If the mother is Rh negative and the father is Rh positive and heterozygous for the factor,there is a 50% chance that each infant born of the union will be Rh positive and a 50% chance that each will be born Rh negative.There is no risk for incompatibility if both the mother and infant are Rh positive.

Which Infant Is More Likely to Have Rh Incompatibility