Similarity of gene duplication histories in the GSIS system. The cluster diagram is constructed from Euclidian distances between vectors of gene duplication history as described in the Materials and Methods. Gene names are coloured according to their phylogenetic classification (red = Metazoan, orange = Universal, brown = Eukaryotic, green = Vertebrate). Coloured dots represent pathway membership as shown in the key. Red stars indicate genes inferred to have undergone at least one episode of positive selection, according to the Selectome database (see Table 2 for more detail).
Ainali et al. BMC Evolutionary Biology 2011 11:142 doi:10.1186/1471-2148-11-142