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WAEC Biology 2013 Question 49

Question 49

Mendelian Inheritance

A man's blood group is AB. What is the probability of the man giving birth to a child with blood group O?

  1. A.0%.
  2. B.25%.
  3. C.50%.
  4. D.100%.
Show the answer and explanation

Answer: A (0%.)

Explanation

A group O child needs an O allele from each parent; an AB father has no O allele, so the chance is 0%.