The FRT-w+* cassette has been excised, juxtaposing the UAS regulatory sequences with arr coding sequences.
There are no ectopic margin bristles in adult wings that express arrScer\UAS.cRa.T:Ivir\HA1 at 18oC.
Scer\GAL4prd.RG1/arrUAS.cRa.Tag:HA rescues arrunspecified