About the Authors

Rosaria Scozzari

Affiliation Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy

Andrea Massaia

Affiliation Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy

Eugenia D’Atanasio

Affiliation Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy

Natalie M. Myres

Affiliations Sorenson Molecular Genealogy Foundation, Salt Lake City, Utah, United States of America, AncestryDNA, Provo, Utah, United States of America

Ugo A. Perego

Affiliations Sorenson Molecular Genealogy Foundation, Salt Lake City, Utah, United States of America, Dipartimento di Biologia e Biotecnologie “Lazzaro Spallanzani”, Università di Pavia, Pavia, Italy

Beniamino Trombetta

Affiliation Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy

Fulvio Cruciani

fulvio.cruciani@uniroma1.it

Affiliation Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy

Competing Interests

NMM is affiliated to AncestryDNA based in Utah. NMM and UAP are affiliated to Sorenson Molecular Genealogy Foundation. AncestryDNA sell kits to determine ancestry (http://dna.ancestry.com/). Sorenson Molecular Genealogy Foundation sold their database to Ancestry.com this year: http://corporate.ancestry.com/press/press-releases/2012/05/ancestry.com-dna-launches/. There are no other patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: RS FC. Performed the experiments: AM EDA. Analyzed the data: AM BT. Contributed reagents/materials/analysis tools: RS NMM UAP. Wrote the paper: RS FC. Reviewed the manuscript prior to submission: RS NMM UAP FC.