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If a baby is blood type B, the one parent must have a B. The possible combinations are:
One parent B (homozygous or heterozygous), other parent B (homozygous or heterozygous)
One parent B (homozygous or heterozygous), other parent A (heterozygous)
One parent B (homozygous or heterozygous), other parent AB
One parent B (homozygous or heterozygous), other parent O
One parent AB (homozygous or heterozygous), other parent O (homozygous or heterozygous)
The Rh factor must be either positive heterozygous or negative in each of the parents.
What else can I help you with?
What blood type must the parents of a B child be?
The parents must have both blood type B or blood type 0 and B.
If both parents have o positive blood how can the child have o positive L blood?
if both parents have positive o blood their child must have positive o blood
Can two A positive blood type parents have a child with O negative blood?
Yes. The geneotype for both parents must be AO+- for the child to be OO--
Can parents with O blood and B- blood produce a child with A blood?
No - this is not possible. The child must have one parent with an A allele in order to have type A blood. Neither of these parents have an A allele - so this is not possible.
Can parents both blood type O have a child with B positive blood type?
It must have one of the true parents blood types.
What blood type would a child have if both parents are O?
The child must have O as well.
Can a parents with O blood and B blood have a child with A?
No - the child must recieve one allele from each parent. This means that because one parent is AB they must donate an A or a B to the child. In order for the child to be O both parents must have at least one O (AO, BO or OO).
Can two O positive blood types have a child with A negative blood?
Yes. The geneotype for both parents must be AO+- for the child to be OO--
How can a child that is born with type AB blood?
the child takes the A gene from one parent and B from the other. And the both of parent are supposed to be AB blood type, or one A blood type and the other B.
Can parents with blood 0 and blood AB have a child with O?
Yes, it is possible for parents with blood types O and AB to have a child with blood type O. The child would inherit an O allele from one parent and an O allele from the other parent, resulting in blood type O.
What two blood types from parents produce blood type A in child?
Parents must be blood type A or O. Any other blood type will not result in a sole A type child. It might result in several other combinations though, which are not relevant to this question.
Can both parents with A positive have a child with AB positive?
No. If two parents both have A blood then they are either AA or Ai. This means they can have a child with AA, Ai, or ii (O blood). To get AB there must be a B somewhere.
