A tubulin promoter drives expression of a mutated form of msl-3 (amino acid replacement F56A), tagged at the C-terminal end with EGFP.
msl-3F56A.tub.EGFP partially rescues msl-3083
63.9% of msl-3083 males carrying msl-3F56A.tub.T:Avic\GFP-EGFP survive to adulthood.