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Only B and O are possible

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Can parents b positive and O positive have a b negative child?

Yes, it is possible for parents with blood types B positive and O positive to have a child with blood type B negative. This can occur if the parents are both carriers of the negative Rh factor and pass it on to the child.


Can parents with A and B blood have a baby with O blood?

Depends if the parents are heterozygous and homozygous. Homozygous meaning that they have the same alleles, heterozygous meaning that they have different alleles, but one allele is dominant. If they have homozygous the chances are impossible, if they are heterozygous then there is a chance.


Can a heterozygous mother with A blood have an O blood child by an AB blood man?

Yes, it is possible for a heterozygous mother with blood type A to have an O blood child when the father has blood type AB. This occurs because the mother provides an O allele and the father provides a recessive O allele, resulting in the child having blood type O.


Do your children have to have same blood as you?

No - children do not have to have the same blood type as the parents. For example, if one parent has blood type A and the other has blood type AB, the child might have A, B or AB blood types. (For the child to have B, the parent with blood type A would need to be heterozygous, Ao)


If one parent has A-blood and the other has A plus blood is it possible for the child to have O-blood?

Yes! The genotypes of the parents can only be "OO" (means two O genes) so both of them cannot give a "B" gene to the child

Related Questions

If both parents have A blood type can they have a child with o blood type?

Yes. Both parents could be heterozygous, that is AO, and pass on the O to their child.


Do both parents have to have type a blood to have a child with type a blood?

No. As long as one parent has an A allele (blood type AB or A) and the other has an i allele (blood type O, A* or B*), it is possible to have a type A child. (* means that the types have to be heterozygous)


A child is born with type AB blood what blood must the parents have?

The most likely blood type for the child is A positive - but A negative, O positive and O negative are also possible depending on the genotypes of the parents. If both parents are heterozygous AO, then the child could have either A or O type blood. If either parent is homozygous, AA, then the child must have blood type A. If the parent with positive blood is heterozygous, Dd (+-), then the child could have either positive or negative type blood. If they are homozygous, DD (++), then the child must have positive type blood.


Can a man with O rh plus and a woman with O rh plus have a child with O rh- blood?

Yes - it is possible. Firstly, if both parents have the blood type O, then the child must also have blood type O. Rh positive is dominant, so a person who is Rh + may be heterozygous (Rh+/Rh-). Both parents in this case would need to be heterozygous for the child to be Rh-.


You are A your wife is O- what will the child be?

Your child can be anything. It doesn't really matter what the parents are. Anything that runs through the family your child can be. The chances of being an O are very small but it is still possible. It depends on whether or not you are homozygous or heterozygous A. All O blood is genetically homozygous. If you are blood type AO then there is a 50% chance of Homozygous O (OO) and 50% chance of heterozygous A (AO). If you are Blood type AA then there is a 100% chance of heterozygous A (AO)


Can parents b positive and O positive have a b negative child?

Yes, it is possible for parents with blood types B positive and O positive to have a child with blood type B negative. This can occur if the parents are both carriers of the negative Rh factor and pass it on to the child.


How could parents with blood type A and B have a child with blood type O?

If both parents had heterozygous blood-type genes, then the child could inherit the recessive O type from each parent. Suppose the mother had the genes for A and O, and the father had the genes for B and O. They would then have blood-types A and B respectively. Depending on which parts were passed to the child, any blood type would be possible.


Can parents with A and B blood have a baby with O blood?

Depends if the parents are heterozygous and homozygous. Homozygous meaning that they have the same alleles, heterozygous meaning that they have different alleles, but one allele is dominant. If they have homozygous the chances are impossible, if they are heterozygous then there is a chance.


Can parents with O blood and B- blood produce a child with A blood?

No - this is not possible. The child must have one parent with an A allele in order to have type A blood. Neither of these parents have an A allele - so this is not possible.


Can a heterozygous mother with A blood have an O blood child by an AB blood man?

Yes, it is possible for a heterozygous mother with blood type A to have an O blood child when the father has blood type AB. This occurs because the mother provides an O allele and the father provides a recessive O allele, resulting in the child having blood type O.


If one parent had type B blood and other parent has type O blood is it possible that their unborn child gets type A blood?

It is possible in the very rarest of cases when actually the O parent is an A without producing the protein. In most cases, however, no.


Can parents both blood type B plus have a chlid with A- blood type?

No, it can't happen. none of the parents have the allele to make a kid with A blood type, and they can have Rh- child if both parent rh alleles are heterozygous.