Fig. 5
From: The early events underlying genome evolution in a localized Sinorhizobium meliloti population
Bayesian skyline plots based on the concatenated genes carrying SNPs for each replicon. a Chromosome. b pSymB. c pSymA. d All concatenated genes carrying SNPs. The median estimates are shown as solid lines, and the blue areas indicate the limits of the 95 % HPD. The vertical line indicates the beginning of the stabilization period. Time (x-axis) is expressed in years ago. The effective population size is indicated on the y-axis