Fig. 2. Abdominal development is delayed in Dm myb mutants. At specified timepoints (hours after puparium formation), the abdominal epidermis was dissected from females that had been raised at 18°C until puparium formation and then shifted to 24°C for continued development. Samples were stained with DAPI to visualize nuclei. Large nuclei represent larval polyploid cells; small nuclei correspond to the diploid nuclei of abdominal histoblast cells. (A-C) w/Df(1)sd72a controls at 13 (A), 30 (B), and 42 (C) hours APF; (D-F) myb2 at 18 (D), 42 (E) and 51 (F) hours APF; (G) myb2/Df(1)sd72a at 42 hours APF; (H) myb2/Df(1)sd72a; P(w+, myb+) at 30 hours APF; and (I) myb1 at 36 hours APF. Arrowheads indicate small histoblast nests. Scale bar: 0.05 mm.
