Point mutation.
Hemizygous larvae completely lack imaginal discs and die. Individuals die as pupae when heterozygous with rl1 or rl6.
L3 larval lethal no imaginal discs pupal lethal when heterozygous with rl1 or rl6 (Hilliker, 1976).
Weakly enhances the eye phenotype produced by activated arm constructs. (either armS44Y.GMR or armS56F.GMR).
Hilliker.