1 doctor weighed in:

How often do blood type a- and o+ parents have a+ offspring?

1 doctor weighed in
Dr. Holly Maes
Pediatrics

In brief: Absolutely

An 'a neg' person can be ao or aa for the 'a' and must be negative/negative for the rh.
So they can give an a or an o gene, but must give a negative rh gene. The 'o' blood type is only oo genetically, but positive/positive or positive/negative for the rh gene. So if the a gives an a and a negative, and the o gives an o and a positive, the child will be a positive, because these are both dominant.

In brief: Absolutely

An 'a neg' person can be ao or aa for the 'a' and must be negative/negative for the rh.
So they can give an a or an o gene, but must give a negative rh gene. The 'o' blood type is only oo genetically, but positive/positive or positive/negative for the rh gene. So if the a gives an a and a negative, and the o gives an o and a positive, the child will be a positive, because these are both dominant.
Dr. Holly Maes
Dr. Holly Maes
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