Additional file 5.

Tree Reconstruction of all β-keratin genes found in the Gallus gallus and Taeniopygia guttata Genomes. Neighbor-Joining tree reconstruction of the 219 β-keratin nucleotide sequences from both avian genomes and the three nile crocodile sequences as the outgroup. The subfamilies are colored with the following scheme: GGA25_Keratinocyte = red, scale β-keratin genes = blue, claw β-keratin genes = yellow, feather β-keratin genes = green and feather-like β-keratin genes = magenta. The taxa nomenclature and methodology is detailed in the Methods section. Only bootstrap values from the Neighbor-Joining method are listed.

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Greenwold and Sawyer BMC Evolutionary Biology 2010 10:148   doi:10.1186/1471-2148-10-148