A woman with blood group O and a man with blood group AB have children. Which blood groups are possible in the children?
Answer and explanation
Correct answer: B. A or B only
- Step 1: The mother gives i; the father gives Iᴬ or Iᴮ, so the children are Iᴬi (A) or Iᴮi (B).
Answer
A or B only.
Why not the others: A, B, AB or O: the woman can only pass on the allele i, so AB and O cannot occur. AB only: the child gets i from the mother, so it cannot be IᴬIᴮ. O only: the father has no i allele to pass on.
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