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There is no single answer to this question. First, how does the child get type AB? The child needs to get an A gene from one parent and a B gene from the other, simple as that. This means neither parent can be type O because they would not be able to pass on the A or B gene (that is what O means, the absense of the A or B gene). If one parent is type A, the other must be B or AB. If one parent is B, the other must be A or AB. Also, both parents can be AB. In all cases, one passes on the A gene and the other passes on the B gene, that's it.
Second, for the Rh factor (the positive and negative), the negative trait is recessive. This means the child must receive a negative gene from BOTH parents to display the negative phenotype. So the parents can be ANY Rh type. Why? Because it is a PAIR of genes, the GENOTYPE, that determines the trait. In the parents, they can be genotype +/- or -/+, meaning they have both the positive and negative gene and they can pass on the negative gene, but they will be POSITIVE Rh because that is the dominant trait. Of course, either parent could also be negative, -/- genotype, and they would certainly pass on the negative gene. So, you see, you cannot definitively type the parents in this case.
What else can I help you with?
Can a mother of 0 negative blood type and a father of A negative blood type have a child with AB blood type?
No they cannot. They can only have a child with type A or type O blood.
If you have o negative blood do your parents have o blood too?
They could, but they don't need to. Both of your parents must have at least one O allele, meaning neither can have type AB blood. They must be either BO, AO or OO to produce a child with type O blood.
Can a person that has o positive blood and a person with a positive blood make a child that has a negative blood?
Yes, it is possible for a child to have a negative blood type if both parents are carriers of the Rh negative gene, even if one parent is O positive and the other is A positive. Blood type inheritance is determined by a combination of both parents' blood types and Rh factors.
What blood types can person with blood type A negative donate?
A person with A negative blood can donate blood to a person with A negative blood and a person with AB negative blood.
What can an individual who is blood type AB negative do?
An individual who is blood type AB negative can donate blood to individuals with AB positive and negative blood types. They can receive blood from AB negative donors, as well as from donors with O negative, A negative, and B negative blood types.
Can a A negative and B negative parental blood types produce a A positive child?
No. They could have an A- child, but not A+.
Can a mother of 0 negative blood type and a father of A negative blood type have a child with AB blood type?
No they cannot. They can only have a child with type A or type O blood.
Can a women with A negative and man with B positive produce child?
Yes. Blood types do not make parents incompatible.
What will a child's blood type be if parent's blood types are O negative and O negative?
Obviously, the child's blood type would be an O negative as well.
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 2 negative blood types have a child with positive blood type?
Nope
If the mother has a negative blood and the father is b negative does that make the child ab negative?
No. If both parents have a negative blood type, the child will either have the mother's blood type,or father's blood type, or if one parent is A- and the other B- only then can a child be born AB-. However, if two people with negative blood types try to have a baby, that may be very difficult. Sterility usually runs on the negative blood types, but conceiving a child is not impossible for them.
Can type a positive and a type b negative have o positive child?
No. For two reasons: an "A" and an "O" can never produce "B," and positve blood types will never yield a negative one.
Is it possible to have a child with o negative blood and mother o positive then father belongs to which blood group?
Both the O and Rh negative types are recessive to the other blood types and the Rh positive trait. Both parents can be any blood type except AB and produce a child with type O blood, and can both be Rh positive and produce a child with Rh negative blood type. Since recessive traits can be carried through multiple generations without ever manifesting as the phenotype, parentage can't be ruled out when recessive traits finally manifest under the right circumstances.
What is wrong with my baby's blood type?
If a child does not have the same blood type as either the father or the mother there is nothing to worry about. It is fairly common for a child to have a blood type that combines the blood types of the parents, such as an AB negative child whose parents had A negative and B negative blood.
If you have o negative blood do your parents have o blood too?
They could, but they don't need to. Both of your parents must have at least one O allele, meaning neither can have type AB blood. They must be either BO, AO or OO to produce a child with type O blood.
Can parents with o blood group and a blood group produce a- Blood group child?
Yes, parents with O and A blood types can have a child with A- blood type. The child would inherit one A allele from the parent with A blood type and one negative Rh factor from the parent with O blood type.
