P{PdL} insertion 69bp upstream of the transcription initiation site, in the same 5'-3' orientation as the direction of transcription of edl.
dorsal appendage | drug conditional, with Tn10\tetRrtTA.Act5C
Females expressing edl4M127 under the control of Tn10\tetRAct5C.T:Hsim\VP16 in the presence of doxycycline produce eggs with fused dorsal appendages.