Fig. 2. The wing development pathway is disrupted at multiple points to create wingless ants. Activity (as measured by gene expression) of genes involved in wing development is shown for ant imaginal wing discs that will and will not produce wings in the adult animals. In these networks, boxes represent genes shown in Fig. 1C and lines indicate regulatory interactions among genes. Green indicates similar expression to D. melanogaster, red indicates divergent or absent expression, and grey indicates genes that were not surveyed. This figure is adapted from Abouheif and Wray (Abouheif and Wray, 2002).