Genetic variation at the phosphoglucomutase-1 (PGM) and acid phosphatase (ACP) loci, in 160 and 120 European and Asian populations, respectively, is described by spatial autocorrelation statistics and directional variograms. Short-distance patterns of gene frequencies correspond to those predicted by models of isolation by distance, but long-range differentiation of populations is observed as well. A possible role of climatic selection in maintaining the PGM polymorphism is supported by the north- south orientation of the gradient for that locus, but not by biochemical evidence. By and large, the observed patterns of gene frequencies seem to reflect a combination of demographic processes, subdivision and isolation of local populations among them. © 1990 S. Karger AG, Basel.
Diversity of some gene frequencies in European and Asian populations. VI. Geographical patterns of PGM and ACP.
BARBUJANI, Guido
1990
Abstract
Genetic variation at the phosphoglucomutase-1 (PGM) and acid phosphatase (ACP) loci, in 160 and 120 European and Asian populations, respectively, is described by spatial autocorrelation statistics and directional variograms. Short-distance patterns of gene frequencies correspond to those predicted by models of isolation by distance, but long-range differentiation of populations is observed as well. A possible role of climatic selection in maintaining the PGM polymorphism is supported by the north- south orientation of the gradient for that locus, but not by biochemical evidence. By and large, the observed patterns of gene frequencies seem to reflect a combination of demographic processes, subdivision and isolation of local populations among them. © 1990 S. Karger AG, Basel.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
