Fig. 6

Selected chromosomal regions with signatures of positive selection according to Tajima’s D analysis. The top panel shows a section of chromosome 5. Tajima’s D was calculated in 5 kb windows and scores are represented by vertical bars. Any bar colored red represents a window where Tajima’s D is significantly negative. Conversely, bars colored light blue represent windows where Tajima’s D is not significantly different from values expected under a site evolving neutrally. The bottom panel is a magnification of the area containing a ~20 kb stretch of significant Tajima’s D scores. Green blocks represent locations of genes contained within the interval