these genotyping arrays was used [14]. We have already demonstrated that whole genome sequencing data can be used to produce comprehensive genetic maps, which can be used for HBCGM studies [14]. Since the pattern of genetic variation across a large number of inbred strains can be characterized at a reasonable cost by whole genome sequencing, it is feasible to produce genetic maps that enable a large number of strains to be used in HBCGM studies.