This figure demonstrated the genetic similarity (homology) of the superficially dissimilar mouse and human species. The similarity is such that human chromosomes can be cut (schematically at least) into about 150 pieces (only about 100 are large enough to appear here), then reassembled into a reasonable approximation of the mouse genome. The colors and corresponding numbers on the mouse chromosomes indicate the human chromosomes containing homologous segments.
Credit or Source: Lawrence Livermore National Laboratory
Human Genome Program, U.S. Department of Energy, Human Genome Program Report, 1997. (website)