Graphical representation of genetic admixture for 39 people of mixed ancestry from South Africa. Each column represents one person’s genome, and the colors represent the parts of their genome contributed by their ancestors, who came from many regions of the world. The figure is based on the population genetic analysis of over 800 microsatellites and 500 indels that were scored for nearly 4000 people from around the world, including the 39 of mixed ancestry from South Africa.
[Data from S. A. Tishkoff et al., Science 324, 2009, 1035-