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Biology · Oct / Nov 2019 · Paper 11 · Question 39

5090Inheritance

A father has blood group AB and the mother has blood group O. What is the predicted ratio of blood groups for the offspring?

  1. A1 : 1 A : B
  2. B1 : 1 AB : O
  3. C1 : 1 : 1 A : B : O
  4. D1 : 1 : 1 : 1 A : B : AB : O

As printed in the paper

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Correct answer: A. 1 : 1 A : B

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