QTL for α -amylase on chromosome 7 H. QTL profiles produced with SML, CIM and BIM. The positions of the structural α-amylase gene (Amy2) and the maximum of the SML QTL peak are indicated by vertical dotted lines. A 5 cM averaging window was applied to the BIM profile for plotting. 'Significant peaks' (p < 0.05 for SML and CIM; 2log BF > 2.2 for BIM) are highlighted by asterisks. The plot is based on the allele calls and genotypes underlying the 'raw' version of the linkage map (see section entitled 'Genetic-map construction' in Methods).