Fig. 6. Partial rescue by CycE or Myc of headless phenotype caused by developmental pathway interference. The rescue effect of D-Myc and D-CycE on adult head development, inhibited by ectopic expression of transcription factors under the control of ey-Gal4, is shown in scanning electron micrographs (anterior is to the left). (A,B) UAS-D-Myc rescues head (A) and eye development (B) in ey-Gal4/UAS-Gsb-7; UAS-D-Myc/+ flies. (C,D) Complete (C) and partial (D) rescue of head and eye development by UAS-D-CycE in ey-Gal4/UAS-Gsb-7; UAS-D-CycE/+ flies. (E-G) Partial (E) and nearly complete (F,G) rescue of head and eye development by UAS-D-CycE to adults that eclosed spontaneously in ey-Gal4/+; UAS-Dac/UAS-D-CycE (E), ey-Gal4/+; UAS-Poxm/UAS-D-CycE (F), and ey-Gal4/+; UAS-Prd-1/UAS-D-CycE flies (G). (H) Complete rescue of head and eye development by UAS-D-Myc in ey-Gal4/+; UAS-D-Pax2-1/UAS-D-Myc flies. Flies shown developed at room temperature (22°C), except for E, which developed at 25°C.