||Bacteria Escherichia coli
||Elena SF, Whittam TS, Winkworth CL, Riley MA, Lenski RE. Genomic divergence of Escherichia coli strains: evidence for horizontal transfer and variation in mutation rates. Int Microbiol. 2005 Dec8(4):271-8. p.276 right column bottom paragraphPubMed ID16562379
||Sequences for each gene region were aligned and
the resulting alignments were subjected to independent phylogenetic
reconstruction by various methods.
||Mya=million years ago. For date of divergence between k-12 and O157:H7 strains up to 4.5Mya see Reid et al., 2000 PMID 10894541 abstract.