Fig. 4.

Batch analysis of the bcd mRNA gradient of embryos at nuclear cycles 13 and 14 and the exponentiality of the gradient. (A-F) Basal (A,C,E) and apical (B,D,F) bcd transcript profiles of 15 Drosophila embryos at nuclear cycle 13 (A,B), 46 embryos at 0-4 minutes of nuclear cycle 14 (C,D), and of nine embryos at 8-12 minutes of nuclear cycle 14 (E,F), were measured as illustrated in Fig. 3L. Insets show the same profiles with intensities of transcripts plotted on a base-10 logarithmic scale.