206 MILDRED HOGE RICHARDS. 



Rose, an eye color appearing in another stock, is the third of 

 a series of allelomorphs. It occupies the same locus on the third 

 chromosome as do pink and peach. Rose is identical in appear- 

 ance with salmon, a new sex linked mutant found by Dr. F. 

 Payne. This case furnishes another example of different genes 

 producing the same phenotype. 



June, 1918. 



REFERENCES. 

 Bridges, C. B. 



'15 Jour. Exp. Zoology, Vol. 19. 

 Muller, H. J. 



'16 Amer. Naturalist, Vol. 50. 

 Plough, H. H. 



'17 Jour. Exp. Zoology, Vol. 24. 

 Sturtevant, A. H. 



'17 Proc. Nat. Acad. of Sciences, Vol. 3. 



