Genotype of the identified polymorphisms for 96 rat inbred strains and substrains. Polymorphisms are typed in reference to the Brown Norway strain (BN/Crl). The green squares represent the allele in accordance with BN/Crl. The red squares represent the presence of the alternative allele. The white squares represent genotyping failures. Different isolates of the same inbred strain are grouped together, separated by thin lines. Thick lines separate different inbred strains. SNPs that are present in the same gene and cosegregate in our data set are represented as a single locus, reducing the number of polymorphic sites to 80. The polymorphic loci are ordered on the horizontal axis in line with the map position based on the June 2003 rat genome assembly (UCSC version rn3). The map position of the last two genes is unknown.
