FIG. 7.

eve stripe 3 lacZ reporter gene is repressed normally in posterior regions in a CtBP mutant embryo. (A) Expression pattern of a 500-bp eve stripe 3 reporter gene in a wild-type embryo. (B) Posterior derepression of the reporter gene in a knirps mutant embryo. (C) Expression pattern of eve stripe 3 lacZ in a CtBP mutant embryo. Embryos did not show derepression in the posterior region of the embryo but did show consistently stronger staining in eve stripe 7 regions (an activity partially contained within eve stripe 3 enhancer sequence [47]) and ectopic activation in the anterior regions of the embryo. (A and B) Parasagittal view; (C) surface view. Embryos are oriented with anterior at the left and dorsal at the top.