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[Migration of the Walser population]
H G Scheil1, W Scheffrahn, G Buchli
1Institut für Humangenetik und Anthropologie, Universität Düsseldorf.
Summary
Early human migrations shaped genetic similarity in modern populations. The Walsers demonstrate how migration, genetic drift, and isolation drive population differentiation and gene pool relatedness.
Area of Science:
- Population Genetics
- Human Evolution
- Anthropology
Context:
- Prehistoric and protohistoric migrations established genetic links between modern populations.
- Genetic drift and isolation following early migrations contributed to population differentiation.
- The Walsers of Grisons, Switzerland, serve as a key case study for these phenomena.
Purpose:
- To investigate the role of migration in shaping the genetic relatedness of Walser populations.
- To demonstrate the congruence between genetic data and historical population movements.
- To explore the existence of a genetic cline in the Safien valley.
Summary:
- Analysis of allele frequencies and electrophoretic variants confirms migration as the primary factor in Walser gene pool relatedness.
- Genetic data aligns with historical records of Walser population history and movements.
- Blood genetic and demographic data support a south-to-north genetic cline in the Safien valley, consistent with 14th-16th century settlement patterns.
Impact:
- Provides empirical evidence for the impact of historical migration on contemporary genetic diversity.
- Highlights the utility of genetic markers in reconstructing population history.
- Offers insights into microevolutionary processes within isolated communities.