THEORY OF EVOLUTION 



79 



and is known as A. lacticolor. When these two 

 tyjjes are crossed they exhibit exactly the same 

 type of heredity as does the black-barred com- 



FiG. 40. Reciprocal of Fig. 39. 



bination in the domestic fowl. As shown in 

 figure 41, lacticolor female bred to grossula- 

 riata male gives grossiilariata sons and daugh- 

 ters. These inbred give grossulariata males 

 and females and lacticolor females. Recij^ro- 

 cally lacticolor male by grossulariata female. 



