Insertion of P element from Athens 77 Q strain close to transcription start site (S. Hayashi, unpublished observations).
Many heteroallelic combinations studied. Dead pharate adults have sternite/tergites partially or completely deleted and/or twisted legs. Some combinations viable with held-out wings and defects in sternites and/or tergites and/or legs. Viable and morphologically normal over esgGW13.