Analysis of mice with recombinant events occurring within Mh. In a selected number of progeny, recombinations occurred within Mh permitting a more precise resolution of the QTL. This diagram schematically depicts the haplotypes for representative number of mice: 14 Gp6^−/− SHORT and 22 Gp6^−/− LONG. Each column represents the results for a single mouse. Each row depicts the typing results at a particular SNP, and the position of a selected number of key SNPs is indicated on the ordinate. □ indicate the 129 × 1/SvJ allele; ■, the C57BL/6J allele; and , heterozygosity. It is evident that the phenotype SHORT is segregating within a limited sequence ranging from 48 163 to 56 497.