I assume you are talking about blood type, and it would depend.
According to you the phenotype is type A on the mother, and type B on the father.
A and B are both co-dominant, and the O is recessive.
Therefore it is possible that the mother is either AA or AO, and the father either BB or BO.
You would have to make a Punnett square to see what percentage chance the child will be either AB, AO, BO, or OO (no chance of AA or BB). Meaning the child could be any type: AB, A, B, or O.
If we assume both parents are homozygous AA and BB, there is no way the child will be type A, he/she would be AB.
There is also no way for the child to be homozygous AA or BB.
The father must have a blood type of B or AB.
I'm not sure how negative or positive is determined, but a B mother and O father can have a B child.
No. The mother only has type O antigens and the father has type B (and possibly O). Neither of them could have supplied the type A antigens to the child.
NO
Yes, the child's blood type can be B if the father has o.
No
No that's impossible.
Yes, a B+ father can have a B- child, regardless of the blood type of the mother. See the link below:
If the mother is A, and the father is A, then the child will only have A antigens and will thus be blood type A. If father or mother are AB, then the child can end up with AB, A, or B blood type. http://en.wikipedia.org/wiki/Blood_type
If the child is type B, then the father cannot be genotype AA, and must be type AO. Thus, the child cannot be type BB, but must be type BO. The mother can be type BB or BO.
No
yes and no
Yes, this is possible the alleles for B-type are (I^B i ) or (I^B I^B ) for a perent to be O which alleles is (ii) the child should be (I^B i ) and in this way the child got the (i) from father, and I^B from mother.