NEW EYE COLOR MUTATION IN DROSOPHILA. 



49 



Fi FEMALE 

 XCvp 

 XcvP 



verm. ' 



GAMETES OF Fi 9 

 GAMETES OF Fi cT 



Fi MALE. 

 XCvp 



XCvp 

 XCvp 



F 2 FEMALES. 

 XCvp 

 XCvp 



verm, pink 9 



XcvP 

 XCvP 



F 



XCvp 

 P 



verm, c? 



XCvP Xcvp 

 P p 



MALES. 

 vermilion c? 



XcvP 

 XCvp 



XCvP 

 XCvp 



Xcvp 

 XCvp 



^_ p cherry verm. cT 



XCvP 



p vermilion cr 



verm, pink 9 ^p cherry verm, cr 1 



vermilion 9 

 vermilion 9 



XCvP vermilion 9 



XCvp 



r verm, pink cr 



XcvP 

 XCvP 



XCvP 

 XCvP 



Xcvp 

 XCvP 



vermilion 9 



vermilion 9 



vermilion 9 



XcvP 



P 



XCvP 



P 



Xcvp 

 P 



cherry verm, 



vermilion c? 



cherry verm, pink a 71 



The count shows that the vermilion pink females in spite of 

 their low viability ran above expectation. The males fall into 

 four classes, two of which can be easily separated out. The 

 cherry vermilion pinks, however, are difficult to distinguish from 

 the cherry vermilions and are therefore included in that class. 

 Together they should be four times as numerous as the vermilion 

 pink class, and the vermilion class ought to be three times as 

 nu merous as the latter, which is actually the case. 



* 



CHERRY VERMILION BY WHITE. 



When white-eyed females were mated to cherry vermilion- 

 eyed males all the male offspring the first generation, 363 in 

 number, were white. The females, 392 in number, were cherry. 

 These when inbred produced in the second generation, white 

 females, cherry females, white males, cherry males and cherry 

 vermilion males. 



' white 9 ... .347 



/ white tf 363\J d l er f ry " " 334 



i rherrv Q 702 / I whlte C? ... .321 



cherry cf....H2 



cherry verm cf 222 



white 9 by cherry verm, cf = 



