Fig. 2. Effect of selection based on the phenotype, the marker genotype, or a combination of both, for different levels of linkage between marker and gene, on Pr(A|M)– continuous lines– and Pr(A)– dashed lines– with = 0.05 and = 0. The relative fitness of genotypes AA, Aa and aa was 1, 0.9 and 0.8, respectively, and of genotypes MM, Mm, and mm was 1, 0.75 and 0.5, respectively.