Multiple choice

If the blood group of one parent is AB and that of the other is O, the possible blood group of their child would be

  1. A or B

  2. A or B or O

  3. A or AB or O

  4. A or B or AB or O
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An AB parent has both A and B alleles, while an O parent has two O alleles. Children inherit one allele from each parent, resulting in genotypes AO (blood type A) or BO (blood type B) - but not AB or O.

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