Marta Mirazon Lahr is a fellow of Clare College, Cambridge. Her research focuses on modern human origins and subsequent differentiation.
Multiple dispersals and modern human origins
Article first published online: 2 JUN 2005
Copyright © 1994 Wiley-Liss, Inc., A Wiley Company
Evolutionary Anthropology: Issues, News, and Reviews
Volume 3, Issue 2, pages 48–60, 1994
How to Cite
Lahr, M. M. and Foley, R. (1994), Multiple dispersals and modern human origins. Evol. Anthropol., 3: 48–60. doi: 10.1002/evan.1360030206
- Issue published online: 2 JUN 2005
- Article first published online: 2 JUN 2005
- population diversity
Despite a massive endeavour, the problem of modern human origins not only remains unresolved, but is usually reduced to “Out of Africa” versus multiregional evolution. Not all would agree, but evidence for a single recent origin is accumulating. Here, we want to go beyond this debate and explore within the “Out of Africa” framework an issue that has not been fully addressed: the mechanism by which modern human diversity has developed. We believe there is no clear rubicon of modern Homo sapiens, and that multiple dispersals occurred from a morphologically variable population in Africa. Pre-existing African diversity is thus crucial to the way human diversity developed outside Africa. The pattern of diversity—behavioural, linguistic, morphological and genetic—can be interpreted as the result of dispersals, colonisation, differentiation and subsequent dispersals overlaid on former population ranges. The first dispersals would have originated in Africa from where two different geographical routes were possible, one through Ethiopia/Arabia towards South Asia, and one through North Africa/Middle East towards Eurasia.