Figure 3. Bulked Segregant Analysis (BSA) by Single Feature Polymorphisms (SFP).

Each panel shows the sliding window average of SFP intensity for greater representation of the WE70 allele (positive) or yw allele (negative) in arrhythmic or narrow diameter flies. The entire X chromosome has the expected enrichment for WE70 alleles inherited from the F₁ fathers. Shallow peaks are observed for SD near 15MB on 2L, at both the tip and centromere-proximal third of 3L, and along most of the length of 3R. For AI there is a minor peak at 15MB on the X. Both traits show a shallow protective effect between MB 15 and 20 on 2R. There is no evidence for a major QTL for either trait (Cen : centromere; Tel : telomere).