Figure 1.

Rates of 16S rRNA divergence in obligate endosymbionts. Divergence times were estimated from the fossil record of insect hosts (see Methods). For Buchnera, Carsonella, and Sulcia, linked points denote the minimal and the maximal dates of divergence.

Kuo and Ochman Biology Direct 2009 4:35   doi:10.1186/1745-6150-4-35
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