Why is Rh incompatibility usually not a problem during a first pregnancy?
A) Fewer first-born children are Rh-positive.
B) The mother's body has already formed Rh antibodies.
C) The mother's body has not yet formed Rh antibodies.
D) During first pregnancies, all mothers are Rh-positive.

Question

Quizplus · Accepted Answer

During a first pregnancy, the mother's immune system has not yet been exposed to the Rh antigen from the fetus if the fetus is Rh-positive and the mother is Rh-negative. Therefore, the mother's body has not yet formed antibodies against Rh-positive blood. This process typically begins towards the end of the first pregnancy, making Rh incompatibility more of a concern in subsequent pregnancies.

Why Is Rh Incompatibility Usually Not a Problem During a First