Exemplar phylogenetic tree of an orthogroup (Cluster_212) with early eukaryotic duplication. (a) Topology of the ML tree, showing this orthogroup had experienced duplication before the plants-animals/fungi split. (b) Topology of the ML tree with protist sequences, showing the duplication happened before the divergence of 'early branching' protists.
Zhou et al. Genome Biology 2010 11:R38 doi:10.1186/gb-2010-11-4-r38