UASt regulates expression of rau lacking the first and second RA domains and tagged with Tag:HA at the C terminus, which disrupts the PDZ-binding motif.
Scer\GAL4GMR.PU-mediated expression does not generate an abnormal eye.
Scer\GAL4da.G32-mediated expression of rauΔRA12.Scer\UAS.T:Ivir\HA1 does not rescue the 'loss of R7 cell' phenotype in Df(2L)rauΔ ommatidia.