A tubulin promoter drives expression of a deleted form of fw that is tagged with EGFP.
fwΔN.Tub.EGFP partially rescues fw42
fwΔN.tub.T:Avic\GFP-EGFP rescues all planar cell polarity defects of fw42, but fails to rescue the bristle shape defects and "furrowed" eye phenotype.