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Updated: Jun 28, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
Published on: February 3, 2023
Population genetic dynamics in the French Guiana region
Stéphane Mazières1, André Sevin, Sidia M Callegari-Jacques
1Laboratoire d'Anthropobiologie, FRE 2960 CNRS, Faculté de Médecine, Toulouse, France. stephanemazieres@voila.fr
Abstract:
Three sets of genetic markers (blood group plus protein polymorphisms, mitochondrial DNA, and Y-chromosome) were compared in four French Guiana and one Brazilian Amerindian populations. Spearman's rank correlation coefficient between five gene diversity statistics and historical or present-day population sizes showed significant values, indicating loss of diversity due to population bottlenecks. The three sets of markers furnished distinct admixture estimates, and the blood group plus protein polymorphisms could have overestimated the European contribution to their gene pool. Correspondence analysis distinguished the coastal from the interior populations, possibly reflecting past migration events.
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