Figure 1From: Updated clusters of orthologous genes for Archaea: a complex ancestor of the Archaea and the byways of horizontal gene transferA commonality plot for Archaeal protein-coding genes. Diamonds show the number of arCOGs that include the given number of distinct genomes. Dashed red lines, decomposition of the data into three exponents (“cloud”, “shell” and “core” [37, 38]); solid red line: the sum of the three components.Back to article page