Effect of increasing ultrasensitivity on mutual fidelity & mutual specificity. MFMS values for networks with CPI, CS, and SC were calculated for 10,000 trials over a large range of parameters (See below for parameter ranges). MFMS values at the 90th percentile of the distribution were then plotted as a function of degree of various Hill exponents. (A) Dependence of each type of network on n, the degree of ultrasensitivity in the X pathway, where ultrasensitivity in the Y pathway was set to one, m = 1. (B) Dependence on m, the ultrasensitivity of the Y pathway, where n = 1. (Parameter Ranges): .