ABSTRACT
In the postwar years the application of relatively simple biochemical techniques to the analysis of human proteins has resulted in the discovery of a great deal of human genetic variability which was heretofore undreamed of. Since the basic techniques· of paper electrophoresis and paper chromatography are relatively inexpensive and easy to run, they have been widely 60
Human Populations 61 used and great numbers of human populations have been studied. One of the most studied of human proteins is hemoglobin, and in the short space of ten years some twenty different varieties of adult hemoglobin have been discovered in the human species. Most of these hemoglobins appear to be due to the presence of a single gene. But while some of these genes are quite widespread among human populations, others seem to be restricted to a few groups.
