Can an o positive father and AB positive mother have A positive baby?

Answer 1

Nope. Type O blood is a recessive trait. This means you have both the dominant and recessive gene for type O blood in both parents. there is no signal (gene) in either parent to cause type A blood in the offspring.

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Answer 2

The actual blood type of a child is determined by the dominant blood type between the two parents. A and B are both dominant over O, which means a child that receives an A blood type from the father and an O blood type from the mother will have an A blood type.

Subsequently, A and B are considered to be codominant, which means a child inheriting an A blood type from the mother and a B blood type from the father will most likely have an AB blood type. Only two recessive O blood type genes from both parents will result in a child having an O blood type.

Answer 3

Blood group is a trait that is controlled by three alleles rather than two. These alleles are IA, IB and IO. IA and IB are dominant and IO is recessive, thus O type of blood group occur if only homozygous recessive (IOIO)is present. Same way of the alleles are IA and IB then codominacy occurs and there is AB type blood group.

The gametes of AB type persons are IA and IB and the gametes of the O type mother are all IO. One of the gamete from the mother will combine with one gamete of father and the offspring will be formed. Thus two combinataions could occur, either the genotype of the offspring is IAIO and he is the blood group type A or he/she has genotype IBIO and his/her blood group type is B. there is no chance of the combination IOIO in the offspring and there could be no O type child.

Answer 4

Both sets of parents can have B positive blood and still give birth to an O positive child. B positive blood can be BB or BO. If both parents are BO positive, they have a 25% chance of having an O positive child.

Answer 5

For O-blood type to come, the alleles should be identical ---> (ii)

and so the father with A and B, blood types

there genes are : IAi X IBi

and so there is one (i) will come from father and the other (i) from mother

with 25% possibility to be O blood type.

and there is no problem in being O positive because both parents are positive.

Answer 6

Yes, it is possible for an O positive father and an AB positive mother to have an A positive baby. The child would inherit one A allele from the mother and either an A or an O allele from the father, resulting in the A positive blood type.

Answer 7

No as neither parent has a B allele they cannot passit on to the offspring mother is AO and father is OO