346 



MUTATIONS IN EYE-COLOR OF DROSOPHILA 



If the flies in question had been pure vermilion (VpoCXVpoc) th 

 give vermilions, or if pure pinks (vPoCXvpoc) they should give pink-eved fl^ 



Since the cross gave only orange flies it follows that males had be 

 duced that lacked all of the three determiners, but contained the color nrod? ^r 

 The remarkable fact is that these flies still show some color which ca " 



either that the color producer itself produces a faint tinge of 'color or thaM^ 

 color C is still complex, containing in addition to C some lesser determiners fo 



mean 



eye color 



April 19, 1912. 



I 



XXVIII 



Fig. 1. Red-eyed fly (wild). VPOC. 



Fig. 2. Vermi 



Fig. 3. Pink-eyed £ 



Fig. 4. Orange-eye< 



Fig. 5. Pure C-eyei 



Fig. 6. White-eyed 



Fig. 7. Eosin-eved 



vPOC. 

 . vpOC, 

 lacking 

 VPoc. 



VpOC. Color should be more brilliant. 



Fig. 8. 

 Fig. 9. 



f 



pink 



eosin 



Fig. 10. White-eosin 



VPoCX 



too red, should be more chrome 

 vpoC. Color should be fainter. 



VPoCX. Miniature wings; black cc 



VPocX. Miniature wings; black color. 

 Miniature wings; black color. 

 >oc. Miniature wings; black color. 



Color of eyei 





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