Table 2.

Comparison of mean distances within cyanobacteria and to other eubacterial phyla

Within a genome
	dW	${\mathit{d}}_{\mathit{W}}^{\mathit{\ast }}$	95% confidence intervals
			lower	upper
Cyanobacteria	0.0001	0.0003	0.0001	0.0005
Chloroflexi	0.0036	0.0020	0.0012	0.0028
Spirochaetes	0.0012	0.0009	0.0005	0.0014
Bacteroidetes	0.0029	0.0023	0.014	0.0032
Between species
	dB	${\mathit{d}}_{\mathit{B}}^{\mathit{\ast }}$	95% confidence intervals
			lower	upper
Cyanobacteria	0.1427	0.1426	0.1235	0.1587
Chloroflexi	0.3409	0.434	0.2489	0.4087
Spirochaetes	0.3537	0.3541	0.2907	0.4017
Bacteroidetes	0.3779	0.378	0.3390	0.4099

Comparison of mean distances in the different eubacterial phyla and the 95% confidence intervals of 10,000 mean values calculated from bootstrap samples. Confidence intervals do not overlap between cyanobacteria and the other eubacterial phyla. Distances of 16S rRNA sequences are significantly smaller in cyanobacteria compared to the other prokaryotes.d_W and d_B: mean calculated from the original dataset including all distances. $d_B^{\ast }$ and $d_W^{\ast }$: mean of 10,000 means calculated using bootstrap sampling.