Fig. 5. Gradients of functional Gnu protein from localized anterior source, conferred on gnu by bcd3'UTR. Phenotypes of embryos from w; P{w+ gnuGFP-bcd3'UTR}S2/+; gnu (quantified in Table 2). (A) Nuclei showing a gradient of Gnu mitotic activity. (B) Gradient of GnuGFP fluorescence. (C-F) Merged images of DNA (red) and GFP (green). (C) Merged images of A,B. (D) Mitotic and over-replicated nuclei. (E) Fully rescued. (F) Unfertilized egg. Mean length of embryos 570 µm.