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A member asked:
My blood type is o negative. does that mean my parents are both o? i'm not sure how blood type works?
2 doctors weighed in across 2 answers
No, one could have been O, A or B, while the other had to be O. The transmission of alleles is in a codominant pattern. There are many web sites available to practice in order to understand.
Answered 8/25/2021
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Neither of your parents could have been AB type. Otherwise they could be any type, A, B, or O. They could also be Rh positive or negative.
Answered 9/3/2021
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