Additional file 2.
Phylogenetic tree of HOXA13 and HOXD13. The evolutionary history was inferred using the Neighbor-Joining method . The bootstrap consensus tree inferred from 1000 replicates is taken to represent the evolutionary history of the taxa analyzed . Branches corresponding to partitions reproduced in less than 50% bootstrap replicates were collapsed. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches . The evolutionary distances were computed using the Poisson correction method  and are in the units of the number of amino acid substitutions per site. The analysis involved 24 amino acid sequences with a total of 114 positions in the final dataset. All positions containing gaps and missing data were eliminated. Evolutionary analyses were conducted in MEGA5 .
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Chew et al. BMC Developmental Biology 2012 12:2 doi:10.1186/1471-213X-12-2