Figure 6. Effect of SLC24A5 genotype on pigmentation in admixed populations. (A) Variation of measured pigmentation with estimated ancestry and SLC24A5 genotype. Each point represents a single individual; SLC24A5 genotypes are indicated by color. Lines show regressions, constrained to have equal slopes, for each of the three genotypes. (B) Histograms showing the distribution of pigmentation after adjustment for ancestry for each genotype.