Bifurcation diagrams for the reporter-less model and the reporter containing model. (a) The reporter-less model. (b) The reporter-containing model (copy number of GFP gene: Nd = 0). (c) Nd = 50. (d) Nd = 600. The behavior of the models with respect to arabinose concentration (X-axis) and IPTG concentration (Y-axis) is shown. The yellow area is the oscillation area and the grey area is the stable fixed area.