22 SOME POSSIBLE BEARINGS OF GENETICS ON PATHOLOGY 



P. 



Sebright Cock 



Game Hen 



R 



F, Hen 



F 2 



Fig. 12. Cross between hen-feathered Sebright cock and black-breasted 

 game female belonging to a race with cock-feathered males. The offspring 

 (Fi) are hen-feathered males and normal hens. These inbred give 3 hen- 

 feathered to 1 cock-feathered son. 



