When can erythroblastosis fetalis not possibly happen in the child of an Rh negative mother?
A) if the child is type O positive
B) if the father is Rh+
C) if the father is Rh-
D) if the child is Rh+

Question

Quizplus · Accepted Answer

Erythroblastosis fetalis cannot occur if the father is Rh- because the child would also be Rh- and there would be no Rh antigen to cause an immune response in the Rh negative mother.

When Can Erythroblastosis Fetalis Not Possibly Happen in the Child