Correspondence analysis of relative synonymous codon usage for Neisseria meningitidis Z2491 genes:
% variability
Axis 1
21.4
Axis 2
9.1
Axis 3
6.4
Axis 4
3.7
Axis 5
3.5
Axis 6
3.0
Red (), blue () and green squares () correspond to genes proposed as being acquired by HGT and included in regions with a low, high and non-deviated G+C content, respectively. Yellow cross diagonals (x) correspond to putative highly expressed genes.
Correlation values between main axis in correspondence analysis and different parameters. See the Abbreviations used: