Figure 2
From: Gene duplications in prokaryotes can be associated with environmental adaptation
Number of genes with paralogs versus genome size. Relationship between numbers of genes having paralogs versus genome size for 200 prokaryotes, including trend line (trend line equation y = 26.99x + 13.40 where y and x stand for "number of genes with paralogs" and "genome size" respectively, correlation coefficient r = 0.73). In particular three genomes differ from the linear trend; these are M. aeruginosa (MICAN), M. nodulans (METNO), and A. marina (ACAM). When these outliers are excluded, correlation coefficient r = 0.80 (trend line equation y = 23.89x + 20.59).