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Low-Pass DNA Sequencing of 1200 Sardinians Reconstructs European Y-Chromosome Phylogeny

2013/08/01 by Paolo Francalacci, Laura Morelli, Andrea Angius +36 · 18 citations
Biochemistry, Genetics and Molecular Biology · Arts and Humanities · #Forensic and Genetic Research #Genetic diversity and population structure #Forensic Anthropology and Bioarchaeology Studies #Haplogroup #Phylogenetic tree #Evolutionary biology #Population #Biology #Mitochondrial DNA #Haplotype #DNA sequencing #Y chromosome #Genetics #Ancient DNA #Gene #Demography #Genotype

paper · doi:10.1126/science.1237947

openalex publication_date 2013/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Genetic variation within the male-specific portion of the Y chromosome (MSY) can clarify the origins of contemporary populations, but previous studies were hampered by partial genetic information. Population sequencing of 1204 Sardinian males identified 11,763 MSY single-nucleotide polymorphisms, 6751 of which have not previously been observed. We constructed a MSY phylogenetic tree containing all main haplogroups found in Europe, along with many Sardinian-specific lineage clusters within each haplogroup. The tree was calibrated with archaeological data from the initial expansion of the Sardinian population ~7700 years ago. The ages of nodes highlight different genetic strata in Sardinia and reveal the presumptive timing of coalescence with other human populations. We calculate a putative age for coalescence of ~180,000 to 200,000 years ago, which is consistent with previous mitochondrial DNA-based estimates.

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