HUMAN HEREDITY AS REVEALED BY PEDIGREES 



451 



and open circles unaffected individuals. Notice that the character 

 appears in at least one parent in each generation, which is characteris- 



*•-*• 



fO. 



tic of the mode of inheritance of dominant characters. Also the num- 

 ber of individuals affected is about what one would expect in the case 

 of a dominant character. 



