NEW EYE COLOR MUTATION IN DROSOPHILA. 



p eosin 9 



cherry verm cf 



Fi FEMALE. 

 XcVe 

 XcvE 



cherry 9 



GAMETES OF Fi 9 

 GAMETES OF Fi cf 



XcVe XcVe 

 XcvE 



Fi MALE. 

 XcVe 



XcVe 



F: FEMALES. 



XcVe 

 XcVe 



eosin 9 



eosin cf 



XcvE Xcve XcVE 



XcVe 



F; MALES. 

 XcVe 



eosin 



XcvE 

 XcVe 



Xcve 

 XcVe 



XcVE 

 XcVe 



cherry 9 



. n 

 eosm 9 



Cherry 9 



XcvE 



Xcve 



cherry verm, c? 



, 

 eosin verm, cr 



cherry 



In concluding I wish to express thanks to Dr. Morgan for 

 furnishing me with material with which to carry on these crosses 

 and for his helpful suggestions during the progress of the work. 

 I have also been greatly helped by discussion of the theoretical 

 side of the matter with Messrs. A. H. Sturtevant, H. J. Muller 

 and C. B. Bridges. Mr. Bridges' suggestions and his final 

 reading and criticism of the manuscript were directly responsible 

 for the appearance of the paper in its present form. I must 

 not forget to express my appreciation of the assistance of my 

 friend Benjamin Schwartz. 



