Figure 2. Haplotype analysis and genetic map of M-1156. A: Haplotype analysis of 109 backcross (N2) progeny from crossing M-1156 and DBA/2J was shown. Genetic markers are listed on the left side (rs3023477 is a single nucleotide polymorphism [dbSNP]). Each column represents a chromosomal haplotype identified in the progeny. C57BL/6J alleles are indicated by black boxes, and DBA/2J alleles are indicated by white boxes. M-1156 denotes the mutant locus. B: Genetic map around the causative gene was shown. The map distances (in cM) are shown on the left side of the map. The mutant locus M-1156 was mapped close to D19Mit42 on mouse chromosome 19.