Distribution of STSs on the chromosome 7 YAC contig map, Genethon genetic map, and RH map. A summary of the total number of STSs present on one or more of the indicated maps is provided in a Venn diagram format. Note that 66 STSs are present on all three maps and that all but a few genetically mapped or RH-mapped STSs are also present on the YAC contig map.