Fig. 5

Amino acid repeat enrichment in the Hox family. For all the analysed species both clade-common repeats (those appeared in all species in a clade) and non-clade-common repeats (those appeared in only a fraction of the species in a clade) are shown. The clade-common repeat for turtle is not shown because only one species (Pelodiscus Sinensis) of this clade is studied. Note that only 34 Hox genes were successfully isolated from the squamate reptiles and compared with other species. The Hox genes are classified as the anterior class, the central class and the posterior class following traditional criterion. The colour depth increases as the number of repeats increases and the numbers of repeat are given beneath the corresponding colour blocks at the bottom of the figure. The total numbers of amino acid repeats in the shown Hox genes per species (LineA) and the total numbers of amino acid repeat containing Hox genes per species (LineB) are given under the chart. “N/A” means that the sequence is currently unavailable