Fig. 3. Chromatin dynamics in diploid nuclei. (A) Inset: fluorescence image of a PhGFP larval wing disc. Intensity pseudo-colored magnified image of the region boxed in the inset. A stack of seven z-sections was imaged repeatedly at 5-second intervals for 120 seconds. Time traces of several loci are indicated by the colored tracks. (B) A single XY plane at time 0 from the stacks is displayed. Time XY tracks are superimposed for two loci (blue and green traces). Zero time (C) XZ planes and (D) ZY planes for the slices designated by the cross-hair in image B. Time traces for the positions of the two loci are superimposed showing the large movements.