Source(s): immigration nationality directorate border immigration uk border agency reference no: https://tinyurl.im/UEZro.
About 99% of mouse genes have a homolog in the human genome, and for 80% of these genes, the best match in the human genome has, in turn, its best match against the orthologous mouse gene in the conserved syntenic interval.
Another difference is that, in the mouse, there are four banks of Hox genes: HoxA, HoxB, HoxC, and HoxD. Vertebrates have these parallel, overlapping sets of Hox genes, which suggest that morphology could be a product of a combinatorial expression of the genes in the four Hox clusters.