A member asked:

I am blood type o+ what blood type would my parents have?

A doctor has provided 1 answer

Many possibilities: At leasat one of your parents would have to be rh positive. For the ABO system, your parents could be group o, either one could be a or b. The only group they cannot have is ab.

Answered 1/12/2015

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Can a child have a negative blood type if both of her parents are o positve?

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