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Mitogenome diversity in Sardinians: a genetic window onto an island's past

Olivieri, Anna, Sidore, Carlo, Achilli, Alessandro, Angius, Andrea, Posth, Cosimo, Furtwängler, Anja, Brandini, Stefania, Capodiferro, Marco Rosario, Gandini, Francesca, Zoledziewska, Magdalena, Pitzalis, Maristella, Maschio, Andrea, Busonero, Fabio, Lai, Luca, Skeates, Robin, Gradoli, Maria Giuseppina, Beckett, Jessica, Marongiu, Michele, Mazzarello, Vittorio, Marongiu, Patrizia, Rubino, Salvatore, Rito, Teresa, Macaulay, Vincent, Semino, Ornella, Pala, Maria, Abecasis, Gonçalo R., Schlessinger, David, Conde-Sousa, Eduardo, Soares, Pedro, Richards, Martin B., Cucca, Francesco and Torroni, Antonio (2017) Mitogenome diversity in Sardinians: a genetic window onto an island's past. Molecular Biology and Evolution, 34 (5). pp. 1230-1239. ISSN 0737-4038

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Sardinians are “outliers” in the European genetic landscape and, according to paleogenomic nuclear data, the closest to early European Neolithic farmers. To learn more about their genetic ancestry, we analyzed 3,491 modern and 21 ancient mitogenomes from Sardinia. We observed that 78.4% of modern mitogenomes cluster into 89 haplogroups that most likely arose in situ. For each Sardinian-specific haplogroup (SSH), we also identified the upstream node in the phylogeny, from which non-Sardinian mitogenomes radiate. This provided minimum and maximum time estimates for the presence of each SSH on the island. In agreement with demographic evidence, almost all SSHs coalesce in the post-Nuragic, Nuragic and Neolithic-Copper Age periods. For some rare SSHs, however, we could not dismiss the possibility that they might have been on the island prior to the Neolithic, a scenario that would be in agreement with archeological evidence of a Mesolithic occupation of Sardinia.

Item Type: Article
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QH Natural history > QH426 Genetics
Schools: School of Applied Sciences
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Depositing User: Sally Hughes
Date Deposited: 20 Apr 2017 13:46
Last Modified: 28 Aug 2021 16:04


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