Figure 3.

Simulation of the feed forward serial network Equation (5) in response to a retrograde signal from Equation (2). (A) Retrograde signal being fed into gene network, τ = 5. (B) Convergence of the solutions of Equation (5) to a T-periodic solution post transience. h[u] is taken to be the same function as f[u] defined in Equation (3) multiplied by a factor of 1000, and we set λ = 0.01. Other parameter values are as in Figure 2.