54 () posted 3 years ago by v8power 3 years ago by v8power +54 / -0 61 comments share 61 comments share save hide report block hide replies
Reading more about it, it is possible. Seems like O-ve was the original human blood type, and over time proteins got added to the blood giving rise to A/B/AB and Rh+ve variants. If you got more pointers on this, happy to read.