Fig. 4From: Highly divergent ancient gene families in metagenomic samples are compatible with additional divisions of lifeDistribution of a) Average Amino Acid Identity and b) Average dN/dS for cliques of highly divergent environmental sequences. A total of 569 cliques (totally connected subnetworks) of highly divergent environmental sequences (whose identity to CPR is lower than 60 %) was identified. Sequences from each of these cliques were aligned, and then their average amino acid identity and dN/dS were computed, and shown in abscissa. Proportion of corresponding cliques is given in ordinateBack to article page