All but the N terminal BTB/POZ domain has been deleted.
When ttk69.BTB.Scer\UAS is driven by Scer\GAL4Bx-MS1096, the number of dorsal chemosensory bristles and mechanosensory ventral triple row bristles appear unaffected.
Df(3R)awd-KRB, Scer\GAL4Bx-MS1096, ttk69.BTB.UAS has wing margin bristle | ectopic phenotype
The addition of Df(3R)awd-KRB to ttk69.BTB.Scer\UAS (driven by Scer\GAL4Bx-MS1096) leads to an ectopic margin bristle phenotype.