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Characterization of Y chromosome diversity in Newfoundland and Labrador: evidence for a structured founding population

Biology

Characterization of Y chromosome diversity in Newfoundland and Labrador: evidence for a structured founding population

H. Zurel, C. Bhérer, et al.

Dive into the intricate genetic mosaic of Newfoundland and Labrador, where 71.4% of the population's Y chromosomes reveal roots tracing back to English and Irish settlers. This study, conducted by a team of experts including Heather Zurel and Claude Bhérer, unveils how historical migration patterns and geographical isolation shaped a unique founder population.

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Playback language: English
Abstract
The population of Newfoundland and Labrador (NL) is largely derived from settlers who migrated primarily from England and Ireland in the 1700s–1800s. This study analyzes 1,110 Y chromosomes from an NL cohort using 5,761 Y-specific SNPs to determine the paternal genetic structure. The majority (71.4%) belong to the R1b haplogroup, resembling English and Irish ancestral populations, with additional contributions from Basque, French, Portuguese, and Spanish populations. Observed population structure shows geographical and religious clustering associated with settlement patterns of predominantly Protestant English and Catholic Irish communities. Limited subsequent in-migration and geographic isolation contributed to the genetic substructure, supporting its classification as a founder population.
Publisher
European Journal of Human Genetics
Published On
Oct 29, 2024
Authors
Heather Zurel, Claude Bhérer, Ryan Batten, Margaret E. MacMillan, Sedat Demiriz, Sadra Mirhendi, Edmund Gilbert, Gianpiero L. Cavalleri, Richard A. Leach, Roderick E. M. Scott, Gerald Mugford, Ranjit Randhawa, Alison L. Symington, J. Claiborne Stephens, Michael S. Phillips
Tags
Newfoundland and Labrador
Y chromosomes
haplogroup R1b
genetic structure
settlement patterns
founder population
paternal ancestry

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