Eye colour: orange-brown.
Eye colour: yellow-orange in male; lighter, yellower, in female; both sexes paler than wa. Malpighian tubule colour: colourless.
wa4 has abnormal eye color phenotype, enhanceable by mw1
In(3)Msu1/+, wa4 has pigment cell phenotype
In(3)Msu2/+, wa4 has pigment cell phenotype
Nichols-Skoog, 12th March 1935.
The alkylating agents EMS, MMS, and ENU induce a clear increase in the frequency of somatic revertant sectors in the eye in wa4 flies.