I wanted to know if it is possible for a new born baby to be o genetic while the father is ab and the mother is o types?

Yes, about 30% of the time somebody is mis-remembering their blood type. About 3% of the time one of the blood type tests went wrong. A bit under 1% of the time the blood type genes combine in unexpected ways and don't follow the chart that other folks will point you to.

Assuming you are correct on all the blood types, No, it is not possible.

Dat was wat I knew . Is nt possible is all I knew. Gingochaeko 2 months ago .

A mother who is blood type O can only pass an O allele to her child. A father who is blood type AB could pass either an A or a B allele to his child. This couple could have children of either blood type A or blood type B but not blood type O.

The University of Arizona Biology Department has a Blood Type Calculator on their website (see attached link) where you can input the blood types of parents and get the possible blood types of the child. You can try it yourself. Html.

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