Published online by Cambridge University Press: 22 January 2009
It frequently happens that the only information available on interrelationships and former movements of African peoples lies in their oral traditions and myths. In the myths it is difficult to disentangle symbolic from historical events and personalities, while, fascinating though it is to listen to an old man recounting the movements of his ‘ancestors’ countless generations earlier, one frequently wishes that there were some independent line of evidence against which his statements could be checked. Such an independent line of evidence is provided by the steadily accumulating data on the genetic Constitution of African peoples. The Nilotes provide an illustration of its usefulness, of its limitations, of the type of additional information required to extract the maximum from the data, and of the postulates necessary to do so.
1 Seligman, C. G., Pagan Tribes of the Nilotic Sudan (London, 1932).Google Scholar
2 Westermann, D., The Shilluk People (Philadelphia, 1912).Google Scholar
3 Crazzolara, J. P., ‘Lwoo Migrations’, The Lwoo (Verona, 1950), Part I.Google Scholar
4 Roberts, D. F., Ikin, E. W., and Mourant, A. E., ‘Blood groups of the northern Nilotes’, Annals of Human Genetics (1955), XX, 135.CrossRefGoogle Scholar
5 Roberts, D. F., ‘A demographic study of a Dinka village’, Human Biology (1956), XXVIII, 323.Google Scholar
6 Roberts, D. F., ‘Some genetic implications of Nilotic demography’, Acta Genetica et Statistica Medica (1956), VI, 446.Google Scholar
7 Roberts, D. F., and Hiorns, R. W., ‘The dynamics of racial intermixture’, American Journal of Human Genetics (1962), in press.Google Scholar
8 Penrose, L. S., Outline of human genetics (London, 1959).Google Scholar
10 Mourant, A. E., The distribution of the human blood groups (Oxford, 1954).Google Scholar
11 Roberts, D. F., and Lehmann, H., ‘A search for abnormal haemoglobins in some southern Sudanese peoples’, British Medical Journal (1955), i 519.CrossRefGoogle Scholar