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If one parent has blood group AB and the other has blood group O, the possible blood group(s) of their child will be

Question and options

If one parent has blood group AB and the other has blood group O, the possible blood group(s) of their child will be
  1. O
  2. AB
  3. A and B
  4. B and AB

Answer and explanation

Correct answer: C - A and B
AB (genotype IAIBI^A I^B) ×\times O (iiii) gives children IAiI^A i (group A) or IBiI^B i (group B), never AB or O. So the possible groups are A and B.

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