Figure 12. Cuticle phenotypes resulting from RNAi knock-down of gt, kni, and Kr in M. abdita.
(A) A wild-type cuticle is shown for comparison to severe phenotypes in gt (B), kni (C), and Kr (D) RNAi-treated embryos. We tentatively assign segment identity to persisting abdominal segments based on their relative spatial order, the position of expression domains of the knocked-down genes in the blastoderm (see Appendix I), and comparison to the corresponding cuticle phenotypes in D. melanogaster. T1–T3; thoracic segments, A1–A8; abdominal segments; solid line indicates fused segments. Cuticles are shown in lateral (A, B), ventral (C), or ventro-lateral (D) view. Anterior is to the left. hb RNAi knock-down phenotypes were previously published in Stauber et al. (2000).