Figure 3.
Genomic organization of genes flanking the vertebrate Hox clusters. The correct relative size of the HoxA (A), HoxB (B), and HoxD (C) clusters (red boxes), as well as putative flanking genes (black dashed boxes) allow for direct size comparisons of large genomic regions between mouse, lizard, chicken and Xenopus. Gene names are shown either above or below each box for the mouse. (Arrows) The relative positions of the genomic regions that are increased in their sizes in the lizard genome. (Dotted lines) Gaps in the genomic sequences.
