Fig. 2.

Expression pattern mediated by the −8.1 kb upstream region of wg (10.216 kb fragment). A, B At stages 5 and 6, the mediated reporter expression pattern in the even-numbered stripes comes up with a delay compared to the endogenous wg expression. C–G During germ band extension, the −8.1 kb region mediates the complete expression pattern in the trunk segments, foregut (fg), and labrum (lr) but not in the procephalon. The open arrow in D and E depicts the region of the prospective intercalary segment. For abbreviations, see Fig. 1