Effect of variation of the rate of binding of miRNA to mRNA (c
) on the repressor R for Model A. Variation of (a) the frequency and (b) the amplitude of oscillation in the Repressor as a function of c3, the rate of binding of the miRNA to mRNA. Cases 1 and 2 are shown in blue and red respectively. The other parameters, namely the miRNA production rate (c1) and RISC degradation rate (c4) are kept fixed at 25 h-1 and 1 h-1 respectively.