Gene copy number variation and its significance in cyanobacterial phylogeny Full Text
BMC Microbiology, 08/16/2012
Schirrmeister BE et al. – Authors suggest that 16S rRNA gene copies in cyanobacteria are homogenized by both concerted evolution and purifying selection. In addition, the small ribosomal subunit in cyanobacteria appears to evolve at extraordinary slow evolutionary rates, an observation that has been made previously for morphological characteristics of cyanobacteria.