World Map (IMAGE) Max Planck Institute of Geoanthropology Caption World map with land area resized to represent modern human genetic diversity and colour representing Neanderthal plus Denisovan ancestry. As can be seen, contributions from other populations to the Homo sapiens gene pool are small and unevenly distributed. Africa is disproportionately large because the great human genetic diversity - and hence the roots of humanity - are found here. Credit James Cheshire/Mark G. Thomas Usage Restrictions This image may only be used in the context of reporting on this publication and with appropriate credit information. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.