Multiple choice

If a man of blood group B marries a woman of blood group AB, then the possible blood groups of their children are

  1. B, AB

  2. A, B, AB

  3. B, A, AB, O

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

When a man with blood group B (genotype I^Bi or I^Bi^i) marries a woman with AB (genotype I^AI^B), their children can inherit A from the mother and B or i from the father (giving A or AB), or B from the mother and B or i from the father (giving B). If father is I^Bi^i: children can be I^AI^B (AB), I^Ai (A), I^Bi^B (B), or I^Bi (B). Thus possible groups are A, B, AB - matching Option B.

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