A wikipedia of Dr. D'Adamo's research

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> * [ Atlas of the Human Journey - The Genographic Project]


See Also


Progressively changing zones of degree difference in frequency of a trait with movement from one region to another. The gradual decrease in frequency of the B blood allele going west in Europe is an example of such a gradation or clinal distribution.

Clines of group B distribution Source


'Discontinuous distribution' is the geographic distribution of a trait such that it appears in high or low frequencies in various areas with little or no gradation between them.




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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Click the Play button to hear to Dr. Peter J. D'Adamo discuss .

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