Quote:
Originally Posted by HeavenlyOne
Not possible. O's cannot produce ABO antigens. O is recessive because it has no antigens, so if someone has an AO marker, their blood type is A. You can only be O with OO markers. If both parents have OO markers, the only result are OO babies. A antigens are not recessive. It's impossible to have OA markers or OB markers. The O is always recessive unless you get one from each parent, then it's dominant in the receiving individual.
If you are referring to people who have O markers but not O type blood, then you are correct. That's because they have the O recessive markers that most people have. The only people who don't have O markers are AB type folks. They cannot produce O babies because they don't have O markers.
http://www.canadiancrc.com/Paternity...lood_type.aspx
That site tells you the possibilities. It's not possible for O parents to have any other children but O. But like I said before, if they have O markers with a different blood type, then yes, it's possible, and you will see that possibility on that website also. |
My doctor was wrong then; she said my daughter had the possibility of A blood, though my husband and I are both O. I hate it when you know more than your doctor.
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