HUMAN INHERITANCE 



197 



From a knowledge of the blood group to which 

 the child belongs it is possible to predict to what 

 groups its parents may have belonged, and in certain 

 cases it is possible to state that an individual of a cer- 



iB 



Fig. 76. — Two pedigrees showing tlie inheritance of two blood 

 groups. See text. 



tain group could not have been the parent of a par- 

 ticular child. 



In the transfusion of blood from one individual 



