Figure 2
From: Assembly rules for protein networks derived from phylogenetic-statistical analysis of whole genomes

Phylogenetic tree of eukaryote species. Phylogenetic tree of fifteen eukaryote species used in this study (after Barker and Pagel, [10]). Dark blue dots illustrate hypothetical instances of a gene evolving and its protein entering the network; light blue dots illustrate instances of a gene and its protein being lost from the network.