A wikipedia of Dr. D'Adamo's research

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An amorphic mutation, or amorph, is a genetic mutation? resulting in either reduction or absence of the gene product at the molecular level, or absent function at a molecular level, also called a null allele.


In the human [ABO Blood Group? ABO blood group] system, the alleles for the A-antigen? and B-antigen are co-dominant, thus they are both expressed if both are present, giving blood type AB. The allele for O blood type, however, is actually exactly the same as the allele for the A-antigen, but with just one different base pair of neucleotides, probably due to genetic mutation?. The protein coded for is non-functional and therefore the gene is expressed phenotypically as the lack of any blood group antigen. The allele for O blood type may therefore be considered as a null allele.





The Complete Blood Type Encyclopedia is the essential desk reference for Dr. D'Adamo's work. This is the first book to draw on the thousands of medical studies proving the connection between blood type and disease.

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