Figure 3From: Evolutionary history of black grouse major histocompatibility complex class IIB genes revealed through single locus sequence-based genotypingSliding window Tajimas’ D, for the 125 bp exon 2 fragments of the black grouse BLB1 and BLB2 (window size 11 bp, step size 1 bp). The threshold for P < 0.05 is shown by the dotted line.Back to article page