Question

What determines if your blood type is positive or negative?

Answer 1

Answer:

Rh Factor. The Rh factor is simply a protein that is found on the covering of the red blood cells. If your red blood cells have this protein, you are Rh positive. If your blood cells don't have this protein, you are Rh negative.

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Answer 2

I agree with what the other person said. I did a little research and it appears they are correct