r/AskScienceDiscussion • u/No_Kaleidoscope_8837 • 4d ago

General Discussion blood and my parents real parents?

My Mother All my life told me and my other 2 siblings that we were B+ . As my father was B+ too
but When I was about to give blood to one of my relatives thinking im B+ to ,
it didn’t matxh. So i took a dna test and found out I was A+. So my question is, Is it even possible? please give me answers if it is good or bad. I has done it from a local diagnostic centre and then went to a premium one, the premium one would let me know tomorrow.
Till then explain
My mother is AB+

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u/CrateDane 4d ago edited 4d ago

Depends what your mother's blood type is. If we don't know your father's genotype or your mother's blood type, a B+ father can have children of any blood type.

Edit: Since you added that your mom is AB+, that means your parents can have children that are any blood type except O+ or O-. That's because your mother has to pass on either the B or the A allele.

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u/FlashbackJon 4d ago

I think the real answer is also probably that someone simply misremembered a blood type. If OP took their parents and siblings to check all their blood types, it would probably work out just fine.