Figure 4. Gap domain boundary positioning is dependent on Bicoid levels in M. abdita.
hb expression (purple) is shown in wild-type (A) and in bcd RNAi-treated embryos (B–D). The position of the posterior boundary of the anterior hb domain moves anteriorly as Bcd levels are reduced by RNAi. (E) Summary graph comparing wild-type boundary positions (grey) to boundary positions affected by RNAi (yellow lines). All embryos are at time class T4. Embryo images show lateral views: anterior is to the left, dorsal is up.