[email protected] wrote:

> I want to relate something I think strange but maybe not.
>
> I am O+  my husband A+
>
> I never knew what our daughter was until she was married and then several
> yrs later pg.  Her doctor told her she would have to take some sort of
> shot because she is O- .  I told her that was a mistake because of me and
> hubby being +.  She went back and told him and she no.  That happens!!
> ????

Yes, two positives can have a negative.  But two negatives cannot have a
positive.  The reason is that positive is dominate and negative is recessive.
You both apparently have one positive gene and one negative.  So there is a 25%
chance of the two negatives ending up together, producing a negative.

Marshall


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