184 



GENETICS 



.... b 



T T 



/ 345-6 



Offspring of SendS 



Offspring of land? 



FIG. 52. A case of three generations of ear-length in rabbits. 0-6, 

 average ear-length of the first filial generation (Fj). a'-b', average 

 ear-length of the Fa generation derived from 1 and 7. Data from 

 Castle, in collaboration with Walter, Mullenix and Cobb. 



upon the ear-length of rabbits which included 70 

 different litters of rabbits containing 341 individuals. 

 In none of these experiments could the blend in the 



