Insertion of a P{EP} element approximately 147bp upstream of lncRNA:Hsrω. Transcription of lncRNA:Hsrω is unaffected, however, there is a severe reduction in the level of transcription of the AP-2σ gene compared to controls.
Larval muscle 6/7 NMJs in AP-2σang-2/AP-2σang-7 transheterozygotes show significantly more and significantly smaller boutons, as compared to controls.