29.5 Anterior Protein staining development uses localized gene regulators Figure 29.7 Bicoid protein forms a gradient during D melanogaster development that extends for 200 mm along the egg of 500 mm mm10020030040050 anterior postero 消当Figure 29.7 Bicoid protein forms a gradient during D. melanogaster development that extends for ~200 mm along the egg of 500 mm. 29.5 Anterior development uses localized gene regulators