The mesothorax phenotype is reduced in combination with RpII215Ubl or RpS174. The dominant wing phenotype is 100% penetrant, occurring variably in the posterior compartment. UbxCbx-2RM/Ubx195 transheterozygotes show transformation of T3p towards T2p, and A1a towards T3a.
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.