My husband's blood group is O- and mine is O+ but my daughter's blood group is B+ how is that possible.explain?

Answers:     I don't ruminate this is possible. I think Dad has to have type B for the child to hold it... A mistake, somewhere, perhaps?
Never speak never as there is some weird stuff out there. If one researches chimerism one finds in the same individual different blood types. These individuals must have tissue sampled from a variety of body sites such as thyroid, germlines, and other body sites. The type B would be in either of your parents. That is a very singular thing and not very common.
omebody who does blood typing surrounded by babies born to type O mothers I have to tell you that one can not rule out a labeling error of the cord blood. If the nursing staff were informed later a retyping of the babies actual blood would have been pursued. This is unfortunately more adjectives. They have many cord bloods around and they put the wrong ID on it. They might also order it on the wrong child with a common last cross. Too bad babies don't have first names to avoid adjectives last name errors. There might be lab error in reporting as sometimes I do three babies at once. The reagents for typing sera are color coded next to blue, yellow and colorless.

The cases I have investigated have be pertaining to the mother being type O and the baby typing as AB and all be resolved by the fact that they were due to in vitro fertilization next to a surrogate mother. We would not investigate a mother who is type O and has a type B baby.

How are ABO alleles inherited by our children?

Each biological parent donates one of their two ABO alleles to their child. A mother who is blood type O can solitary pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could own children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
om the mother
A from the father ------------------- A

O from the mother
Since there are 4 different maternal blood types and 4 different protective blood types possible, there are 16 different combinations to consider when predicting the blood type of children.

Blood Type Calculator
The following Blood Type Calculator lets you determine the *possible* blood type of a child, given the blood types of the two biological parents or the *possible* blood types of one biological parent, given the blood types of the child and the other biological parent. We emphasize "possible" because, within most cases, blood typing is not conclusive when attempting to determine, include or exclude an individual as the parent of an offspring.

This calculator is based solely on theoretical principles. It would be a mistake to use this information to fashion any conclusions about your own family tree. Anyone wishing personal information going on for their own blood type inheritance is encouraged to contact their health care provider.

It's only possible if your husband is NOT the father.

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