Showing papers by "Robert R. Sokal published in 1982"
377 citations
TL;DR: Collective study of the 21 variable surfaces and of their correlograms supports a hypothesis of migration leading to the observed patterns with three alternative explanatory hypotheses being eliminated.
Abstract: Twenty-one allele frequencies of the human HLA loci from 58 localities in Europe and the Near East were subjected to spatial autocorrelation analysis. The frequencies were significantly heterogeneous over the localities. Significant clinal structure is shown by most allele frequencies. Collective study of the 21 variable surfaces and of their correlograms supports a hypothesis of migration leading to the observed patterns with three alternative explanatory hypotheses being eliminated. Cluster analysis of allele frequency surfaces and of correlograms shows that there are at least three distinct classes of patterns. By connecting localities along the established paths of the spread of agriculture into Europe, it can be shown that one of these surface clusters and their corresponding correlograms closely relate to the spread of farming. The results are compatible with a hypothesis of demic diffusion of early farmers into the hunter-gatherer population of Neolithic Europe first advanced by Ammerman and Cavall...
135 citations
01 Jan 1982
TL;DR: Friedlaender et al. as discussed by the authors introduced a different analytical technique from the fieds of population biology and geography to examine the advantages and disadvantages of this approach as contrasted to those now in common usage.
Abstract: The large and rich data set collected on Bougainville Island during 1966–67 and 1970 has already been subjected to numerous analyses in vogue during the past decade (Friedlaender, 1971a,b, 1975; Friedlaender et al., 1971). These and related analytical techniques are employed in other articles in this volume to perfectly suitable ends. It seems most appropriate here to introduce, to the anthropological audience, a different analytical technique from the fieds of population biology and geography to see what new light it might cast upon this particular body of data and to examine the advantages and disadvantages of this approach as contrasted to those now in common usage.
31 citations
01 Jan 1982
TL;DR: A new method of geographic variation analysis based on several variables measured in the same population, which permits inferences about the population processes that have given rise to the observed variation pattern, is reported.
Abstract: In this study we report a new method of geographic variation analysis based on several variables measured in the same population, which permits inferences about the population processes that have given rise to the observed variation pattern. The method is applied to geographic variation patterns of 21 allele frequencies of the human HLA loci in Europe. Inferences about the processes responsible for the pattern support an earlier hypothesis about the spread of agriculture into Europe in neolithic times. The rapid accumulation of immunological and electrophoretic data in man and other organisms is in turn generating new geographic distribution maps of allele frequencies. Tables of human allele frequencies and some new maps have been published by Mourant et al. (1976) for blood groups and electrophoretic mutants; by Ryder et al. (1978) for the HLA loci; and by Friedlaender (1975) for blood
5 citations