Figure 6. Active hb transcription at cycle 13 spans the entire interphase.

(A) Shown is a merged confocal image of an embryo undergoing mitosis. This embryo has the 13^th mitotic wave on the anterior side, as evidenced by the breakdown of the nuclear envelope. Scale bar, 50 µm. (B) Shown is a higher magnification of a section of the image illustrating the reappearance of the cycle 14A nuclei and the hb intron dots (detected by an intronic probe) behind the mitotic wave. (C) Shown is a high magnification of a section of the image illustrating the disappearance of cycle 13 nuclear envelope and hb intron dots on the front of the mitotic wave.