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What happens in case of Rh incompatibility between a pregnant mother and her foetus?

Options

  1. AThe mother does not form any antibodies.
  2. BThe foetus does not get exposed to the mother's blood.
  3. CThe mother starts preparing antibodies against Rh antigen in her blood.
  4. DThe foetus does not form any antibodies.

Correct answer

C. The mother starts preparing antibodies against Rh antigen in her blood.

Step-by-step solution

: Another antigen, the Rh antigen similar to one present in Rhesus monkeys (hence Rh), is also observed on the surface of RBCs of majority (nearly 80 per cent) of humans. Such individuals are called Rh positive (Rh+ve) and those in whom this antigen is absent are called Rh negative (Rh-ve). An Rh-ve person, if exposed to Rh+ve blood, will form specific antibodies against the Rh antigens. Therefore, Rh group should also be matched before transfusions . A special case of Rh incompatibility (mismatching) has been obse

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