Can a mother with B blood type and a father with O blood type have a baby with A blood type?

Answer 1

Since blood goes by a two-gene system, yes. A-type is dominant to O-type. If the parents each have one O gene and one A gene the A will dominate but the O will still be there. There is a chance that when the genes are passed to the child, they will get a copy of each of its parents O genes.

Answer 2

It is impossible for two parents expressing blood types O and B to have a child expressing the blood type AB. For a person to express the blood type O they must have two type O alleles for the gene, because it is a recessive allele. Therefore they can only contribute an O allele to any offspring. Persons expressing the blood type B may be homozygous dominant for the B allele (have two B alleles) or may be heterozygous, containing one B allele and one O allele, which would not be expressed because of the B allele is dominant. Their exact genotype (BB or BO) would not be determined through simple blood typing (phenotype-or expressed blood type- is determined.) Either way, they could onlycontribute a B or O allele to any offspring. Therefore is is impossible for two individuals type O and B to produce a type AB child. Any child produced by these two would be blood type B or O if the mother is in fact BO. If a child is expressing the A antigen (A and B alleles are codominant, therefore both are expressed) along with the B antigen, the child must have inherited an A allele from one of the parents. This means that one of the parents must express the A antigen (is either type A or AB.)

Answer 3

We are looking for the possible blood types of a baby.

Parental information:

• Mother type A --can be AA or AO = contributes A or O gene
• Father type O --can only be OO = contributes O gene

Baby receives one gene from each parent:

• Baby is type AO
• Baby is type OO

YES, the baby of Type A x Type O parents can be Type O.

HOWEVER: There is more to ABO blood typing that just the ABO gene.

There is also an inhibitory gene that will change any genotype into the phenotype O.

Therefore a person with genetically AB blood can be tested as having Type O.

If either Type O parent has the inhibitory gene affecting his Type A, B or AB blood, then the baby may not be just AO or OO. It can be Type B or even, rarely, AB.

then the Type A baby is definitely possible.

Answer 4

Yes, I have O blood type from my father and RH factor is NEG, ONeg like my father.

Answer 5

Not with the male as the biological father.

Answer 6

No i dont think so

Answer 7

No.

Answer 8

No