TABLE 3.

Sequence variation at five loci

GeneFragment size (bp)Mean G+C content (%)No. of allelesNo. of polymorphic sitesaNo. of nucleotide substitutions per nucleo- tide sitedN/dSb
gyrB55440.5814 (7)0.00488.33
ddl44436.81010 (1)0.002062.01
pgm40240.4127 (2)0.002943.94
recP54144.7836 (18)0.006622.46
mleA33939.221 (0)0.00110
  • a Number of silent polymorphic sites in parentheses.

  • b Calculated by using the START program and expressed as the dN/dS ratio multiplied by 100.