44 



HEREDITY IN RABBITS, RATS, AND MICE. 



TABLE 25. Grade distribution of the FI young produced by the cross of 

 dark Dutch with tan Dutch. 



TABLE 26. Grade distribution of the F\ young produced by the cross of white 



Dutch with tan Dutch. 



TABLE 27. Grade distribution of the FI young from crosses of dark Dutch with 



self and of white Dutch with self. 



