Question:

Can a blood type AA and B make a type O child?

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Can a blood type AA and B make a type O child?

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  1. NO!  Unless your AA person had a type of meiosis mutation and gave no blood type gene.  Very unlikely if even really possible. If the people were only just A  ( as in your not sure it is AA)and B then it is possible that both parents carry the recessive allele and an O child is possible.  


  2. i don't think so.

  3. No

  4. The child could have any of the following blood types:

    A, AB, B, O

    So yes, your child could have type O blood.  

  5. no. Read all about blood types by going to the link I posted as my source. Blood type AA means that parent has two copies of the gene for type A blood. That parent can only pass on the A blood genotype. The second parent you mention expresses type B, but you do not mention the second gene that parent carries. It could be an O, but since the other "AA" parent has no O type to pass on (only A or A to pass on) the child will have one A gene and the other gene will either be the B gene or the unmentioned one from the other parent. You have to have two copies of the "O" type to express an O bloodtype.

  6. No that would be impossible. The recesive trait, O, must be present in both parents in order for it to be transfered to the child.  

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