Question

If a man Rh${}^{+}$ve marries a lady Rh${}^{-}$ve, then

• A. First child will die
• B. First child will survive
• C. No child will be born
• D. None of the above

Answer 1

Answer: (B)

First child will survive

When a Rh-negative mother is impregnated by an Rh-positive father and is carrying an Rh-positive baby, the foetus Rh antigens will be recognized as foreign invaders in mother's body. It can initiate the protective mechanism that can end up harming the child during second pregnancy and is called as erythroblastosis foetalis. It less concerned with first child but during second pregnancy plasma cells produces antibodies. So, $A^{+}$ boy and $A^{-}$ girl should be avoided in biological marriages.