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    Blood: The Rh Factor

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    If a couple are both rh positive...the man being B+ and the woman is O positive Is it possible for this couple to have a B- child? Also why is it that a B- child can only receive blood from a B- or O- person? If this child ever needs a blood transfusion how come neither one of the parents can donate blood does this mean this child was not fathered by the B + man?

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    Solution Preview

    It is possible that a child has blood group B- provided parents are heterozygous for the Rh factor.
    The possible genotypes of parents are:
    IBi Rh+Rh- (B+ male) and ii Rh+Rh- (O+ ...

    Solution Summary

    The inheritance of and transfusion of Rh factor in blood types is explained.