Topic by Bunny Wabbit

  • Bunny Wabbit
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What genotypic blood types must parents have in order to produce offspring of blood type A & blood type 0 only

  Reply by Wil

  • Wil
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What genotypic blood types must parents have in order to produce offspring of blood type A & blood type 0 only

If you are saying that the same set of parents produced two children, and one child had type A blood (which could be either AA or AO) and the other child had type O blood (which could only be OO), then the parents could have been either:
AO and AO
AO and OO
AO and BO