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A/O, B/O, or O/O any combination. Each parent contributes one gene, A and B are dominant, so any combination that could result in O/O would result in a child with O blood. The Rh factor is similar. Rh positive is dominant, so the child would have to inherit 2 negative genes to be Rh negative. Each parent contributes 1 of the 2 he/she carries. Almost any blood type can result in a child with Rh + blood. +/+ or +/-. The child would have to inherit the - gene from BOTH parents (they would both have to be +/- or -/-) in order to be Rh negative. If both parents are Rh-, the child would be Rh-, otherwise it is hard to predict. Even if both parents are Rh+, it is possible for the child to be negative if both carry the recessive negative gene.

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15y ago
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15y ago

There is no way to tell what blood group either parent has from the blood group of the child, one parent has A, the other parent could be A or O.

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14y ago

If both parents are A+, a child can be A or O blood type, and either + or - Rhesus factor.

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Q: What blood type would a baby have if mom and dad were a positive?
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Related questions

If one parent has A positive blood and the other had A positive blood what type will the baby have?

The blood type would be A positive.


A Father with A positive blood type and a mother with O positive blood type will have a baby with what blood type?

The baby will normally be A positive.


If a father has type A positive blood and the mother has type O positive blood what blood type will the baby have?

Well the baby will have an O positive blood type.


Can an AB positive blood type and a o positive blood type a produce an o positive child?

No, because the domonite blood type would be AB positive. So you would most likely get a baby that is AB positive.


What blood type would a baby have from an 0 negative mother and A positive father?

the baby would have type-A blood. (AO blood - A is dominant over O)


What type of blood will baby have with father a positive and mother o positive?

baby blood group will be A or O


If the mother has type O positive blood and father has type AB positive blood what type blood will the baby have?

A, b, ab


Can a parent with O negative blood type and a parent with A positive blood type have a baby with O positive blood type?

Of course!


Is it possible for a man with AO positive blood type and a woman with OO positive blood type to conceive a B plus baby?

No the baby blood type will be (ao)or(oo)


If the mother a positive and baby a positive what is the father blood type?

a positive


Can baby have b positive blood type if mother is o positive and father is ab positive?

Punnet square; baby will be either AO or BO blood type.


Could a Father with type b rh positive blood and mother with type o rh positive have a baby of blood type a positive?

No.