A mother of blood type A+ who has always been perfectly healthy just delivered her second child. The father is of blood group O-. Knowing that the child is of blood group O- (O, Rh-), what would you expect to find in this child?

Question

Quizplus · Accepted Answer

Since the mother is blood type A+ and the father is blood type O-, it is impossible for the child to inherit the A antigen from the mother. Therefore, there is no ABO blood group incompatibility that could lead to hemolytic disease of the newborn. Additionally, since the father is Rh negative, there is no Rh incompatibility either. Therefore, the child would not be expected to develop hemolytic disease of the newborn.

A Mother of Blood Type A+ Who Has Always Been