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14718502 tn?1436122469

Generics - Blood combinations on babies

Could you please explain if it is possible for a father who has O positive blood and a mother with A positive blood to have a baby with O negative blood? I am a little confused and have been trying to research the answer. I would appreciate if you are able to assist.
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Avatar universal
i know that this is much older, but i'm a product of those two blood types.  ironic as i came across this per our old thyroid posts!
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