Fig. 5

a The distribution of mRNA for a gene with a strong promoter (blue bars), a fit of the simulated data to a Poisson distribution (red line) and a fit to the zero-spike model (cyan line). b The same as in a for a gene with a weak promoter
a The distribution of mRNA for a gene with a strong promoter (blue bars), a fit of the simulated data to a Poisson distribution (red line) and a fit to the zero-spike model (cyan line). b The same as in a for a gene with a weak promoter