Figure 4

Genome scan for muscularity of the rump. A. Manhattan plot for RMS (muscularity of the rump – side view) obtained when including MRC2 genotype in the model. Alternating gray and black symbols mark the limits between successive chromosomes. The two red horizontal lines correspond to the thresholds for genome-wide significant and suggestive association, respectively. B. Effect (X-axis) and population frequency (Y-axis) of the 20 ancestral haplotypes fitted in the association model.