Gene order is not conserved in bacterial evolution.
Mushegian
A R
AR
Koonin
E V
EV
D001419:Bacteria / Q000235:genetics*; D005075:Biological Evolution; D002874:Chromosome Mapping; D004926:Escherichia coli / Q000235:genetics; D005798:Genes, Bacterial; D006193:Haemophilus influenzae / Q000201:enzymology; D009174:Mycoplasma / Q000235:genetics; D013045:Species Specificity