. The elements of genetics. Genetics. MAN AND MANKIND pressure of centrifugal migrations from eastern into western Europe (Figs. 88a and b). Students ot language have often held the view that some inherent 64-5 61-5. Fig. 88a.—Genetic contour map of Europe to show the geographic gradients in O blood group chromosomes in man. Note that the peripheral distribution of the high populations is as though determined by migration from the east across the central plains. property of peoples influences the sounds they use and the changes this use undergoes. We now see that the undefined "Substratum
. The elements of genetics. Genetics. MAN AND MANKIND pressure of centrifugal migrations from eastern into western Europe (Figs. 88a and b). Students ot language have often held the view that some inherent 64-5 61-5. Fig. 88a.—Genetic contour map of Europe to show the geographic gradients in O blood group chromosomes in man. Note that the peripheral distribution of the high populations is as though determined by migration from the east across the central plains. property of peoples influences the sounds they use and the changes this use undergoes. We now see that the undefined "Substratum" assumed in linguistics is the aggregate genotypic action of the com- nninity. But it may be asked why such action should change sounds, 362. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darlington, C. D. (Cyril Dean), 1903-; Mather, Kenneth. New York : Macmillan
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