Figure 4

Decay of linkage as a function of the genetic distance between markers and a trait locus. The measured allele-frequency difference between two bulks (40 plants each) was plotted against the cM distance between chromosome-3H markers and the mPub locus. The inset displays a linear regression of the allele-frequency difference for markers within ± 30 cM from mPub on the cM distance from mPub. Black data points are significantly linked to mPub at the p < 0.05 level for 'pooling noise' (see Figure 2).