SHELLEY R. SAFIR. 



Pi 



GAMETES OF 

 GAMETES OF 



white 



cherry verm. 

 Fi FEMALE. 

 XcVw 

 XcvW 



cherry 9 

 Fi 9 

 Fi o 71 



Fa FEMALES. 

 XcVw 

 XcVw 



.9 

 .c? 



XcVw XcVw 



XcvW 



Fi MALE. 

 XcVw 



XcVw 



white o 71 



XcvW XcVW 

 XcVw 



Xcvw 



white 9 



XcVw 



XcvW n 



XcVw cherry 9 



XcVW 



XcVw Cherry 9 



XcvW 



XcVW 



Xcvw 

 XcVw 



white 9 



Xcvw 



Fa MALES. 

 white c? 



cherry verm, 



cherry 



white cf 



The expectation is an equal number of white females and 

 cherry females. The actual count was 347 white females and 

 334 cherry females. Of the three classes of males the expectation 

 is as many white males as cherry and cherry vermilion put 

 together which is the case as the figures show: 321 white males 

 and 334 cherry and cherry vermilion males. The cherry and 

 cherry vermilion males should be in equal numbers. But this is 

 not the case in the actual count as the cherry vermilion males 

 are twice as numerous as the cherry males: 222 of the former to 

 112 of the latter. This effect is due to linkage. 



CHERRY VERMILION BY EOSIN. 



When eosin-eyed females were mated to cherry vermilion- 

 eyed males all the male offspring in the first generation were eosin 

 and the females were cherry. These when inbred produced in 

 the second generation, eosin females, cherry females, eosin males, 

 cherry males, cherry vermilion males, and eosin vermilion males. 



Because of difficulty of separation, I have placed the cherry 

 and the eosin females in one general class. For the same reason 

 I have placed the eosin and the cherry vermilion males in one 

 general class. 



eosin 



>/>_! -71 I tVJOlli {J 



eosin 9 by cherry verm, cf : | c herry 9 



[ eosin 9 

 cherry 9 

 c? 119 I eosin 



no 



154 



cherry o 71 20 > 76 



cherry verm, o 71 \ 



eosin verm, c 71 18 



The results may be accounted for in the following way: 



