DILUTION EFFECTS IN CERTAIN EYE COLORS 



453 



Gametes ofFi9 XWvp — Xwvp 

 Gametes of Fi cf XWvp p 



In the last F2 classes the pure vermiUon pink females are con- 

 siderably darker than those heterozygous for white. This is the 

 same difference spoken of above as shown between Fi females 

 compared with the stock females or any vermilion pink males. 



A few vermilion pink females heterozygous for white (like Fi 

 females above) were mated to white vermiUon pink males and 

 gave as already pubUshed (1912, page 343), the following: 



white 9 



26 



white cf 



41 



In another cross some vermilion pink females heterozygous for 

 white were mated to pink males and gave: 



pink 9 

 117 



vermilion pinkcf 

 61 



white cf 

 70 



Eosin pink heterozygous for vermilion 



On page 444 among the F2 classes are found 562 eosin pink 

 females heterozygous for vermilion and 471 eosin pink males 

 (Xw^Vp — — ^p) which correspond to the eosin pink females. 

 These eosin pink females are lighter than the stock females 

 homozygous for V. 



The comparison is more clearly brought out in the following 

 cross because both classes of females appear under the same con- 

 ditions. Some of the F2 eosin piiik females and males derived 

 from the experiment referred to above were inbred as follows: 



