Additional file 4.

Statistical evaluation of differences between Dlx expression patterns in gnathostome odontode development. A. Matrix describing the expression pattern of each Dlx gene from the mouse, zebrafish, medaka and dogfish, during all four odontode developmental stages (see text for a description), either in the epithelial (e) or mesenchymal (m) compartment. Data are as of Table 3, but different columns were made for oral (o) versus pharyngeal (p) teeth in medaka, or scales (s) versus oral teeth (o) in dogfish. B. Neighbor Joining tree inferred with a pairwise distance (number of differences) matrix estimated with the matrix of characters shown in A.

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Debiais-Thibaud et al. BMC Evolutionary Biology 2011 11:307   doi:10.1186/1471-2148-11-307