Model of African History (IMAGE) Uppsala University Caption Demographic model of African history and estimated divergences. Vertical colored lines represent migration, with down-pointing triangles representing admixture into another group. Southern African hunter-gatherers are shown by red symbols, and Iron Age farmers as green symbols. Extracted from figure 3. Credit Uppsala University Usage Restrictions Can be used in articles about this study 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.