Fig. 7. Interval mapping of the modifier locus in the N3 analysis on chromosome 2. The vertical and horizontal axes show LOD scores and the relative positions of the markers along the chromosomes from centromere (left) to telomere (right) in cM, respectively (determined by QTL cartographer). Two broken horizontal lines indicate the LOD scores (1.9 and 3.3), which represent suggestive and significant linkages (Lander and Kruglyak, 1995), respectively. The most likely position for each locus, determined by its two LOD support intervals, are indicated by the black bars above the plot.

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