(c) The scientists predict that the presence of activated Ras in the Double-Mutant (Sev RasP) R7 precursor cell will enable the cell to differentiate into an R7 photoreceptor cell. Based on Figure 1, evaluate the likely accuracy of their prediction (d) The Sev RTK is expressed in more cell types than R7 precursor cells and it appears to be important in determining the phenotypes of these other cells. Explain how one receptor can induce different phenotypes in different cell types.