Additional file 1.
Maximum likelihood phylogenetic tree of all human plus selected protostome and cnidarian homeodomains for identification of gene families. Arbitrarily rooted phylogenetic tree of all human plus selected protostome and cnidarian homeodomains constructed using the maximum likelihood (ML) method. Bootstrap values supporting gene family designations are shown. Homeodomain sequences derived from pseudogenes are excluded. This ML tree should be compared with the neighbor-joining (NJ) tree shown in Additional file 2.
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Holland et al. BMC Biology 2007 5:47 doi:10.1186/1741-7007-5-47