K. TOYAMA 



403 



(1) 



The case where characteristics behaved materuallj- in inheritance, such as normal, 

 reddish brown, grey, etc. 



i) = dominant; i? = recessive characteristics. 



(1) Vi) 



Fi eggs 

 F.2 eggs 



a D X s R) 



I 

 D 



( f i? X J D) 



I 

 B 



■Fs eggs 



Ft eggs 



Fc eggs 



Fa eggs 

 Fr eggs 



D 



I 



L. 



(D + R) 



I 



(D + R) 



D 



I 



I 



(D + R) 



— 1 



D 



I 

 D 



I 

 Constant 



I — 

 I 

 D 



I 

 ] 



(D + R) 



R 



I 

 R 



I 

 Constant 



(2) 



Tlie case where characteristics behaved in normal Mendelian order, snch as the crimson 

 colour. 



(1) (2) 



9D X iR 9 R X iD 



Fi eggs 



I 



Fo eggs 



■P'i eggs 



I 

 (3D 



I 



L. 



liJ) 



I I 



D (3D : IR) R 



In the former scheme, the D represents dominant coloured batches, the R recessive and 

 (D + R) a mixture of both D and R batches, while in the latter the D and R represent a 

 single batch of D and R eggs and the (3D : IR) a mixed batch consisting of D and R 

 in the proportion of 3 : 1. 



