Can 2 O positive parents give birth to A positive child
Can 2 O positive parents give birth to A positive child
Here's good research: Blood Type Genetics and Compatibility - Baylor Scott & White Health
If I remember my Physiology classes, No, one would have to be an A type. Of course, I would have a DNA test done. Try this link
Blood Type Child Parental Calculator -- EndMemo
There are more to blood grouping than just the O or A, There are in reality, two typings where there are a lot of combinations.
So without knowing the full typing, there is no way to answer the question.
With the very limited informaiton given, since there is a sub typing, that could have been A, it is possible.
Two O parents will produce a type O child.
BLOOD TYPE CHART_CHILD FATHER MOTHER-PATERNITY determination by blood type - parents & child
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