Fig. 7. Diagram illustrating the mode of action of minc in the myogenic pathway and patterns of gene expression underlying myoblast diversification within the somatic mesoderm. Fusion-competent myoblasts (red; fcm) and founder myoblasts (green; fm) segregate from unspecified somatic myoblasts (blue) through the activation of the N signalling pathway in the fusion-competent myoblasts. This leads to minc being expressed selectively in these cells, thus initiating patterns of gene expression that are characteristic of either fusion-competent cells (red) or founder myoblasts (green). minc expression in fusion-competent cells is required both for specific patterns of gene expression (h, sns) and for the implementation of myogenic differentiation in these cells (myosin).