highly significantP = 0.08
When the variance associated with the ChrII locus was fixed as a covariate, the ChrVIII QTL was highly significant (6.81 LOD, marker AK50), and additionally, a second peak was observed on ChrVIIb, though this peak did not meet statistical significance ( P = 0.08, marker L363) ( Fig. 2D ; Tables 1 and S2).