The mesothorax phenotype is reduced in combination with RpII215Ubl or RpS174. The dominant wing phenotype is 100% penetrant, occurring in the posterior compartment and variably in the anterior compartment. UbxCbx-2/Ubx195 transheterozygotes show transformation of T3 towards T2, and A1a towards T3a.
Hemizygotes display ventral setal belt on the first abdominal segment is intermediate between the normal third thoracic belt and the normal first abdominal belts.
Semi-lethal in combination with ph-d2. Escapers show complete transformation of wing to haltere and a marked reduction of the mesonotum.
Kreber.
The Cbx mesothorax phenotype is reduced in a number of Cbx mutations in combination with RpII215Ubl. This reduction of the Cbx phenotype follows the order: UbxCbx-Hm > UbxCbx-2RM = UbxCbx-2 = UbxCbx-M1 > UbxCbx-1RM = UbxCbx-1 = UbxCbx-3 = UbxCbx-Twt. The Cbx mesothorax phenotype is reduced in a number of Cbx mutations in combination with RpS174. This reduction of the Cbx phenotype follows the order: UbxCbx-2RM > UbxCbx-2 = UbxCbx-M1 > UbxCbx-1 = UbxCbx-1RM.