Our analyses of the microsatellite data found no evidence for linkage satisfying our LOD threshold of 1.8 in either the two-point or the multipoint screens. For the two-point screen, the only LOD scores over 1.0 occurred on chromosome 7 at D7S821 (LOD = 1.13, position = 116.6 cM) and chromosome 15 at D15S230 (LOD = 1.43, position = 135.6 cM) and D15S642 (LOD = 1.12, position = 152.1 cM). For the multipoint analysis, the only LOD score over 1.0 was 1.49, which occurred on chromosome 15 at 142 cM. Thus, in a direct comparison of the two-point screens using SNPs versus microsatellites, it is curious that higher LOD scores were detected with the SNPs than with the microsatellites, even though the SNPs are individually less informative. It may be the density of the SNP map that was beneficial and allowed the detection of linkage evidence that was missed by the microsatellite screen. To examine this hypothesis, we compared the locations of the trait-linked SNP markers on chromosomes 2 and 7 to the locations of the microsatellite markers using integrated map
