Figure 2From: Gene synteny comparisons between different vertebrates provide new insights into breakage and fusion events during mammalian karyotype evolutionThe colour code for chromosomal regions 1–38, X and Z chromosomes was employed to indicate regions of conserved synteny in Figure 1 and Additional file 1. The same colour code was also used to depict the ancestral boreoeutherian karyotype indicated in Figure 3.Back to article page