We are looking for the possible blood types of a baby.
Parental information:
- Mother type A negative -- can be AA or AO and Rh (--)
- Genes: A, O, (-)
- Father type A -- can be AA or AO and Rh (--)
- Genes: A, O, (-)
Baby recieves one gene from each parent:
- Baby is type AA Rh (--) = Type A neg
- Baby is type AO Rh (--) = Type A neg
- Baby is type OO Rh (--) = Type O neg
If both parents are A neg, then they would have an Type A neg or O neg child.
The child cannot B because the parents do not carry a B gene, and cannot be Rh positive since neither parent carries the Rh (+) gene.
