Fig. 7. Bcd-dependent activation of hb and otd is unaffected in embryos from P1590 GLCs. Cellularizing (A,B,E,F) and cellularized (C,D,G,H) embryos were hybridized with digoxigenin-labeled hb (A-D) or otd (E-H) antisense RNA probes. Embryos are oriented with anterior towards the left and dorsal upwards. Wild-type embryos (left column) are compared with embryos from P1590 GLCs (right column), which have greatly reduced maternal CtBP function. No change is detected in the expression pattern of either gene with the exception of the later hb pattern (D), which shows a posterior expansion of the PS4 stripe (*), and an anterior expansion of the posterior hb domain. This perturbation is only detected in a small percentage (
10%) of embryos from P1590 GLCs. See text for further details.
