(A) Geographic distribution of African (green), (B) European (blue), (C) Amerindian (orange) ancestry based on individual estimates.

<p>To facilitate comparison, color intensity transitions occur at 10% ancestry intervals for all maps. Maps were obtained using Kriging interpolation (see <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0004045#sec002" target="_blank">Materials and Methods</a>).</p

Dirichlet distributions of the ancestral components of the study population.

<p>The European component had a normal distribution and consisted of 40–60% of the study population. The African component had a non-normal distribution and consisted of less than 30% of the study population. The Native American (Amerindian) component had a non-normal distribution and consisted of 20% of the study population.</p

Comparison of medians of ancestral components according to the geographical origin of the population, Andean vs. Atlantic regions (Mann-Whitney U-test).

<p>Comparison of medians of ancestral components according to the geographical origin of the population, Andean vs. Atlantic regions (Mann-Whitney U-test).</p