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If one parent has blood type O positive and the other has A positive what type will the child have?
Wiki User
∙ 15y ago
Each person has two genes that determine blood type - one you inherit from each parent. There are three versions (know as alleles) of this gene: A, B, and O. Having A and/or B creates antigen molecules on the surface of your blood cells, while having O codes for a protein that is not functional and does not produce surface molecules.
Basically A and B are dominant, and O is recessive. So, the possible combinations for a person (showing one from each parent) are:
A, A = A blood type
A, O = A blood type
A, B = AB blood type
B, B = B blood type
B, O = O blood type
O, O = O blood type.
In your situation, you have one parent whose two genes must be A and B, and the other whose must be O and O (since those are the only combinations leading to AB and O blood types). There are only two possible resulting combinations:
A, O = A blood type
B, O = B blood type
So your child would be A or B blood type.
As for positive and negative, it works the same way. The Rh factor (which is what the pos/neg is called) includes one gene from each parent, which positive being dominant over negative. So you're both positive. meaning you could both be +,+ or +,-
If one or both of you is +,+ then the child's Rh would have to be positive.
If both of you are +,- then there is a 25% chance the child will be negative.
Hope this helps!
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoNo, child can't be A positive ,if both parents are O+.
Type O blood group is recessive over A,B and AB.If both parents are O+ then they have Io Io genotype,crossing will not give A genotype. For A blood group any one parent should be heterozygous or homozygoes for A genotype.
Wiki User
∙ 15y agoThe child will either have type A blood or type O.
Wiki User
∙ 14y agoThey will be either A-group or O-group (i.e. either A or O, and could be either positive or negative).
Wiki User
∙ 14y agoO positive or A positive
David Kurtz
O-
Anonymous
When will the children have
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Can a parent with type a positive and a parent with type b positive have a child with o positive blood?
Depending on their genotype this can be possible. A, B and O refer to the so-called phenotype, which means the actual testable result of genetic information. The genotype on the other hand refers to the actual genetic information of an individual. There are basically three genes that code the AB0 system, a gene for A, a gene for B and a gene for 0 (actually there are subtypes, but this is not important here). Everyone has two genes, one on each chromosome of a pair of chromosomes. One gene is inherited form the mother, the other one from the father. This combination is called genotype. Depending on the combination of genes the four phenotypes are formed. The genotypes are AA and A0 for phenotype A, BB and B0 for phenotype B, AB for phenotype AB and 00 for phenotype 0. Now to answer the question precisely one would have to know the genotypes of the parents. For example if the parents are genotypes A0 and B0 then the children could have any of the four blood types. The answer would be "yes", as it is possible for the child to to inherit the gene (better a gene) for the positive rhesus factor if both parents have it. If on the other hand the parents have the genotypes A0/BB, AA/B0 or AA/BB then it is impossible for them to have a child with blood type 0 as no combination would produce the genotype 00 necessary for the phenotype 0. Conclusion: It it can be possible. So a child with blood type 0 positive can come from a couple with blood types A positive and B positive. But not all couples with this constellation of blood types will be able to have a child with blood type 0.
Can a child with type o blood have parents with ab blood?
"No, if each parent has AB then the child can be A, B or AB but not O." Not exactly. Yes, it IS possible for a child with Blood type O to have a parent with the AB Blood type although it is extremely rare. There are different reasons for this. One is the Bombay blood group. There is also Chimera, or 'vanishing twin'. In certain Asian groups, some of these folks have a rare version of the ABO blood type gene called cis-AB. People with this gene version have an AB blood type but can easily have an O child. I am an O blood type child of an AB blood type parent, although we are not of Asian/European descent. I also have other siblings who are Blood type O so I know it is possible.
Can an AB positive parent and B negative parent give birth to an O negative child?
No, the child will inherit either the A or the B blood type antigen from the mother, plus any blood type antigen the father might provide. This would mean the child can only be A, B, or AB (should the father provide the opposite blood type antigen that the mother provides).
If father O plus and mum A negative what will children be?
It is impossible to say with certainty, but the 2 possibilities are type B neg or O neg. The answer depends on whether the father is homozygous or heterozygous for B. In other words, he could have the genes BB or BO, and therefore either contribute just a B, in which case the child would have genotype BO and phenotype B, or the father could contribute a B or and O (if he is genotype BO), and then the child could be either B or O. The child should definitely be Rh-neg.
Could a father with blood type o be the father of a child with blood type ab?
No.In order to have blood type O, the father will have the genotype oo. The child receives one allele from each parent, so they must receive an o from the father - because he only has oo.Therefore the child will be Ao, Bo, or oo - depending on the mother's blood group.
Can b positive parent have child with a positive blood?
A B+ parent can have a child with A+ blood. The other parent must be type A or type AB for this to occur.
What type of blood does a child make is one parent blood type is O positive a the other is a positive?
The child could be A+ or O+.
If one parent is o positive and other parent a positive what will their child be?
the child's blood type will be whatever their mother's is in almost all cases because the mother cannot host the life of a child with a different blood type. this is because the mother gives the child blood so they must be the same type.
Can a b neg father have an A pos son?
A father with the blood type can be b negative can have a child even a son that is A positive. The blood of a child comes from one or the other parent. If the mother is A positive the child can be as well.
If one parent is o positive and the other is a positive what will the child's be?
The question is incomplete. The blood type, (or ABO group), for only one parent is there. Positive refers to the presence of an antigen for the Rh group . The child will therefore be Rh positive since both parents are Rh positive. One parent's blood type is O. The other parent can have O, A, B, or AB as a bloodgroup. Without knowing both parents blood groups, and not just the Rh status, there is no way of knowing the bloodtype of the child.
Can one parent have b positive blood and the other parent have a positive blood have an ab negative child together?
Yes, if the first parents' genotype is either BB+- or BO+-, and the second either AA+- or AO+-.
How can a child's blood type be A positive if mom is O positive and dad is AB negative?
because the dad blood was stronger and one positive and one negative make a positive
What blood type would a child have if one parent was b negative and the other b positive?
b posgative
If you are AB plus can your child have the same blood type as you?
The child can have the same blood type. It is possible if the child obtains the allele IA from one parent and IB from the other. So if a person with blood type AB provides IA or IB and the other parent provides the other allele, then the child may have the same blood type i.e. AB positive.
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 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 child have A negative if one parent is A positive and the other is B positive?
no
