Both genomes have a SNP density of 1 on every 110 bp and these are not evenly distributed over the genome. Some areas have a very low SNP density (shown later) but still allow the generation of sufficient SNP markers for linkage analysis. Except for chromosome 4 that has a putative inversion, all other chromosomes show a very good collinearity and interference of large differences in genome organisation on recombination is thus not expected.