no, unless one of the parents has b blood it is impossible for the child to have b blood.
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Yes, it is possible if for some reason one parent inherited the B gene which didn't manifest. If no B proteins are produced, blood typing tests will never say it's B. However, that person can still have the gene, just not produce the protein for some reason.
No. O is recessive. The parents would have to have A and B phenotypes in order for their child to have AB- blood.
No, because A & B are dominants.
No, two parents with O type blood cannot have a child with B type blood. This is because O is recessive - meaning in order to have type O blood, you need to have two O alleles. Therefore if both parents have O blood, all their children have to have O type blood. In order to have a child with B type blood, at least one parent needs to have B or AB type blood - in order to donate the B allele to the child.
Yes, they can have a child with blood type AB, which is the rarest of the four types.
Yes, two B positives can produce an O positive child.
It is not possible for two parents with blood types AB and B to have a child with O blood type. A child's blood type is determined by the combination of their parents' genes, and O blood type requires both parents to have at least one O gene.
Yes, it is possible for two parents with blood type B positive to have a child with blood type AB positive. This is because the child can inherit one B allele from each parent to make blood type AB.
The parents must have both blood type B or blood type 0 and B.
I assume the question is "Is it possible for two parents with type B blood to have a child with type O blood?" Yes they can, if both parents have BO genotype. The chance of the child having O blood is 25% in this case. Source: http://en.wikipedia.org/wiki/Blood_type
If both parents are B- they can only have children who are B- and O-. One would have to be positive in order to have a child with positive blood.
If the parents had the genotypes AO and BO, then they could have a child with Type O blood (there would be a 25% chance of this occurring).
If they both have type A blood, they cannot have a child type B.