Heritability of lnmaxalc was estimated to be 15%. In general, genome-wide comparisons revealed similar linkage patterns among the three marker sets (Figure 1). The less dense SNP1 map appeared to perform similarly to the SNP2 map, although LOD scores were highest with the SNP2 map. Multipoint variance components linkage analysis revealed robust LOD scores > 1.0 on chromosomes 1 and 13 for all three marker sets (Table 1). Additional LODs > 1.0 were obtained on chromosome 4 with both SNP maps. Further signals on chromosomes 18 and 21 were observed with the densest SNP map (SNP2). Peak LOD scores for lnmaxalc were observed on chromosome 1 for all three maps.
