Figure 7.1 Comparison of chromosomal, linkage, and physical maps. The three types of maps are shown for loci on Chr 17. The chromosomal and linkage maps extend over the entire chromosome with lines connecting the relative positions of loci mapped in both. An example of a long-range physical map for a 1,200 kb genomic interval around the Tcp10b locus (Barlow et al., 1991) is shown along with a short-range physical map for the gene itself.