Figure 3.
Conservation of the Hbr DME. Extensive regions of conservation can be detected between D. melanogaster (x-axis) and D. virilis (y-axis) in the region of the DME (red bar). Conservation within the DME is indicated by yellow shading; gray shading indicates a conserved region not required for DME activity that may represent part of a tracheal-specific enhancer (M. Halfon, unpubl.). Little conservation is evident in the adjacent sequences (see Supplemental Fig. 3 for details. Online at http://www.genome.org).
