GENE MUTATIONS 



temperature, if the lighting is good, a few 

 specks can usually be distinguished in males. 

 So far, white is the only underlying eye color 

 that will differentiate speckled. This mutant 

 is of normal viability and fertility. 



RED, rd (eyes). Red is a recessive factor iqr 

 eye color which is not allelic to orange. It 

 varies considerably in intensity, depending on 

 the temperature, from a light red to a dark red 

 almost black. The ocelli are a light pink and 

 can be used as an aid for distinguishing the 

 very dark red eyes from wild-type. This mutant 

 is female fertile, and the males are of normal 

 viability. 



PELLUCID, pi (eyes). Pellucid is an eye mutant 

 in which the compound eyes are semitransparent. 

 It is female fertile, and the males are of nor- 

 mal viability. 



PINK, pk (eyes). This is an eye mutation in 

 which the compound eyes are pink. It appeared 

 in the progeny of an X-rayed female in the sum- 

 mer of 1945. It is of normal viability and 

 fertility. (Discarded) 



TINTED, tn (eyes). This mutation can best be 

 observed in combination with white. In this 

 combination the compound eyes are not opaque 

 but have a grayish cast with a semitransparent 

 background. It is female fertile, and the males 

 are of normal viability. 



MOTTLED, mo (eyes). This is an eye mutation in 

 which the compound eyes are not uniformly black 



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