Left: PCR based reporter assay data simulated with Gillespie's algorithm using parameters presented in Table 2 and extracted 51 times (n = 50), every 30 minutes with an independently and normally distributed error ( = 9). Each cross correspond to the end of simulated trajectory, so that the data drawn are of form (22). Since number of RNA molecules is know upto proportionality constant y-axis is in arbitrary units. Time on x-axis is expressed in hours. Estimates inferred form this data are shown in column Estimate 1 in Table 2. Right: Fluorescence level from cycloheximide experiment is plotted against time (in hours). Subsequent dots correspond to measurements taken every 6 minutes.