How often does 2 parents with positive blood have a child with negative blood?

Anonymous

∙ 14y ago

Updated: 8/18/2019

Theoretically :

This is rare actually, and there is two possible genotypes

1-Both parents are positive but with different alleles ( heterozygous )

---> Rh+Rh- vs Rh+Rh-

here there is 25% of kids may have Rh-Rh-

2-Both parents are positive with same alleles ( homozygous )

---> Rh+Rh+ vs Rh+Rh+

here there is Zero% of kids to be negative, because all will be positive.

Medical Answers need confirmation and re-confirmation.

Wiki User

∙ 14y ago

What else can I help you with?

Can parents who have B negative and O positive blood types have a child with O positive blood?

No, they will have a O negative child.

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

Yes, you very much can have a child with O positive blood.

Can two parents with o positive have a child with a A negative blood type?

it is possible but the child can be a positive

Can a child have a negative blood types if the parents are both a positive?

Yes! Parents have two genes for pos/neg blood type, and only one of them needs to be positive for the parent to have positive blood type. Most positive-blooded people have one positive gene and one negative gene. If both positive parents pass on their negative gene, they can have a child with a negative blood type.

Can a child with o negative blood have the same parents as a child with o positive blood?

yes

Can two parents with A positive blood have a child with O negative blood type?

No.

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

If both parents are B- they can only have children who are B- and O-. One would have to be positive in order to have a child with positive blood.

If both parents have positive blood type will the child have a positive?

Probably, because it only takes one positive gene to have positive type blood. But if the positive parents each have one positive and one negative gene, there is a 25% chance their child will be negative.

Can negative and a positive blood type make a positive?

If one of the parents is A positive, the child could be A positive.

Father AB positive and mother B positive can child be A negative?

Yes, it is possible for parents who are AB positive and B positive to have a child who is A negative. This is because a child can inherit one A and one Rh negative gene from the parents, resulting in blood type A negative.

Can a A positive blood type mother give birth to Rh negative daughter?

Can a child with RH neg blood come from parents that are A positive and A negative

Can two parents who have positive blood type have a child with negative blood type?

yes they can

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