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# Is it possible for someone to have blood group 'o' if both parents are 'a'?

Updated: 9/15/2023

Wiki User

15y ago

Yes. Someone is type A if their alleles are either Ia and Ia OR Ia and Io. Having either combination will yield someone's blood group as type a. Suppose both parents have the latter combination Ia and Io. Using a punnett square, there is a twenty five percent chance that the child will get Io and Io (type O blood).

Wiki User

15y ago

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Q: Is it possible for someone to have blood group 'o' if both parents are 'a'?
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Related questions

### Can parents with o negative blood and b negative blood have a child with a negative blood?

yes it can be possible too as the parents is already with an o blood group..

o-

### Can parents with b positive and o positive blood have a child with b negative blood?

yes it can be possible too as the parents is already with an o blood group..

### Can parents with b positive and o positive blood have a child with O negative blood?

yes it can be possible too as the parents is already with an o blood group..

### Is it possible for parents who are both blood group O to have babies who are blood group A?

If one parent has blood type B and the other blood type O, it is possible to have a baby of blood type O or B. It is NOT possible (0% chance) to have a baby with blood type A.

yes

### AB and O parents what will be the effect on child?

When the parents are with blood group AB and O, the possible blood group of the child would be either A or B. This is because the blood group AB has the genotype AB and blood group O has the genotype OO. Thus upon recombination, the only outcomes would be AO - meaning blood group A, or BO- meaning blood group B.

### Is it possible for a child with O negative blood group to have both parents with O positive blood groups?

Yes. Negative is recessive.

### Is there a possibility to have blood type A of the baby if parents are both blood type o?

No, it is not possible for the baby to have an A group with both parents being O. This is because the parents would have the genotype OO,thus on recombination, the only possible outcome is again an O.

### What would be the possible blood group of a child if one of his parent has blood group AB and other has O?

A,B,AB or O. The +\- would depend on the parents rh factors

No

### Is it possible for a baby to have a different blood type then the parents?

It is possible if your parents have different blood types. Example, if your father is A with a recessive O, and mother is B with a recessive O, you could easily land up with a O blood group. However, an AB father can have only an A, B or AB child depending on the mothers blood group, but surely NOT 'O.'