Figure 5. dMi-2 is required for full decondensation of heat-shock loci.

w¹¹¹⁸ control and transgenic larvae expressing dominant-negative dMi-2^K761R were subjected to a 20 min heat-shock at 37°C. Polytene chromosomes were visualized by staining with DAPI (right panels) or indirect immunofluorescence using an antibody against Pol II Ser2 (left panels). Arrows indicate the hsp70 gene containing loci 87A and 87C.