Figure 4

Relationship between gene count and genome size. To determine the stability of pan/core genomes, (a) the core genome size (number of common genes within samples) and (b) pan genome size (total number of different genes identified within samples) was determined when between 2 and 13 genomes were combined in random order. For each combination size (2…13 genomes) 1000 permutations were conducted. The boxplots represent the median and interquartile ranges of 1000 permutations, whiskers extend to the value extremes.