Fig. 1From: Evolutionary history of the human multigene families reveals widespread gene duplications throughout the history of animalsEvolutionary history of human tetra-paralogon Hsa 1/2/8/20. A circular view of human chromosomes shows the paralogons detected among human chromosomes 1/2/8/20, including the synteny relationship among 36 distinct multigene families: 11 families from previously published data that are labeled in black [14], whereas the 25 families analyzed in the present study that are labeled in green. Blue lines connect positions on ideograms for gene families with 3-fold representation, while yellow lines connect families with four-fold representation on these chromosomes. Detailed information about each family is given in Table 1Back to article page