Figure 6.
Structure and conservation of tandem repeats. Periodic structures of ∼100-bp region from even-skipped stripe 2 (A,D), even-skipped stripe 4+6 (B), andfushi-tarazu proximal enhancer (C) are revealed by matrix search for Bicoid, Knirps, and Tramtrack, respectively (see also Table 5). The red arrows indicate sites that produce a positional weight matrix score in the 4–6 range (shadow sites). Evolutionary conservation in four species of Drosophila is shown foreve stripe 2 (ATCCC)n (D).
