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WAEC Biology 2013 Question 53

Question 53

Mendelian Inheritance

If a boy has blood type O and his mother has blood type A, what is the genotype of his father?

  1. A.BB
  2. B.AA
  3. C.AO
  4. D.AB
Show the answer and explanation

Answer: C (AO)

Explanation

The boy is OO, so the father must carry an O allele; of the choices only AO has one.