Anything except AB
Yes. Both parents could be heterozygous, that is AO, and pass on the O to their child.
no, blood type AB has gennotype IA,IB while blood type o has the genotype II. Each of his parents passed on an allele,So neither could have blood type AB
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
No, unless they adopt.
For parents with o+o, they will have kids with O type blood. For parents with A+A, they will have kids with A or O type blood. For parents with B+B, they will have kids with B or O type blood. Foe parents with AB+AB, they will have kids with AB, A or B type blood.
both parents carried the recessive gene for type O blood. the baby then inherited 2 recessive genes and received type O blood. the reason the parents didn't have type O blood is because they carried genes that were more dominant.
If both parents are type O blood they will only have type O children
No. It is not possible for a child to have A if the parents are O blood type. If both parents have type O blood, then their children will also have type O blood. However, two parents with type A or type B blood (both the same or one of each) can sometimes have a child with type O blood. That is because the gene for type O blood is recessive. But they must carry the O type. However, two parents with type AB blood can have a child with type A, type B, or type AB blood, but cannot have a child with type O blood.
i don't think one of his parents could have ab because o is reccisive and ab is much more dominant so both parent might have o blood type
If both parents are O ,,,,,,,,,,,, all kids will be O ,, no possibility for A
Parents of blood type O can only have children with blood type O. Because type O is recessive, you know that the parents are homozygous O.
No. Not if they are the biological parents. HOWEVER, one or both parents could have a weakened D antigen (weak D) which could result in a lab result of O NEGATIVE...then yes, their child could be O POSITIVE.