P{PdL} insertion 98bp upstream of the transcription initiation site, in the same 5'-3' orientation as the direction of transcription of dbr.
dorsal appendage | drug conditional, with Tn10\tetRrtTA.Act5C
micropyle | drug conditional, with Tn10\tetRrtTA.Act5C
Females expressing dbr3M1753 under the control of Tn10\tetRAct5C.T:Hsim\VP16 in the presence of doxycycline produce eggs with multibranched dorsal appendages and micropyle.