Blood Groups and Significance · NCERT Biology

Erythroblastosis foetalis is a condition that can occur during a pregnancy involving:

  1. Rh+ mother and Rh- foetus
  2. Rh- mother and Rh+ foetus
  3. Rh- mother and Rh- foetus
  4. Rh+ mother and Rh+ foetus
Show answer and explanation

Correct answer: Rh- mother and Rh+ foetus

This condition occurs when an Rh- mother carries an Rh+ foetus. During delivery, the mother may be exposed to foetal blood, causing her to develop antibodies that can attack the RBCs of a subsequent Rh+ foetus.

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