9IO 



THE HEREDITY OF THE BLOOD GROUPS 



b) THE GENETIC DATA 



In 1908 Epstein and Ottenberg/ in a report of two families, presented the first 

 evidence that the blood groups might be inherited. In one, the mother and seven sons 



CHART I 



No. 40 



No. 52-53 



E^KD 



No. 54-64-65 



O 



B 



No. 37-67 



© [I^T^ 



No. 34 

 aI — |—{B 



AB 



No. 46 



O -i-lAB. 



©0 



No. 47-48-49 



© 



(O) (^ (0) (A) (O) 



twins 



^ 



No. 7 



AB 



B 



© 



B 



B 



]~~~1 



Illustrative Families 

 ' Epstein, A. A., and Ottenberg, R.: Tr. New York Path. Soc, 8, 117. ic 



