- The numbers of base substitutions per site between sequences are shown in the lower left panel. In the upper right genetic similarities values are given. Strain M7p showed values that just exceeded the species threshold compared to some B. bissettii strains (bold numbers and shaded in light grey in column 6). The shaded regions in columns 2–4, 9–20 and 22–30 correspond to intraspecific divergence within genospecies (B. carolinensis, B. bissettii and B. burgdorferi sensu stricto, respectively). Analyses involved 29 nucleotide sequences and were conducted using the Kimura 2-parameter model [16]. Codon positions included were 1st + 2nd + 3rd + Noncoding. All positions containing gaps and missing data were eliminated. There were a total of 4785 positions in the final dataset. Evolutionary analyses were conducted in MEGA6 [17]
