New discoveries concerning Ötzi's genetic historyThe Iceman's maternal genetic line originated in the Alps and is now extinct
A study was published 08 Jan 2016 on the DNA of Helicobacter pylori
, the pathogen extracted from the stomach of Ötzi
, the ice mummy who has provided valuable information on the life of Homo Sapiens; new research at the European Academy of Bolzano/Bozen
(EURAC) further clarifies the genetic history of man who lived in the Eastern Alps over 5,300 years ago. In 2012 a complete analysis of the Y chromosom
(transmitted from fathers to their sons) showed that Ötzi’s paternal genetic line is still present
in modern-day populations.In contrast
, studies of mitochondrial DNA (transmitted solely via the mother to her offspring) left many questions still open.
[...] Ötzi's paternal lineage, G2a
, is part of an ancient genetic substrate that arrived in Europe from the Near East with the migrations of the first Neolithic peoples some 8,000 years ago. Additional migrations and other demographic events occurring after the Neolithic Age in Europe then partially replaced G2a with other lineages, except in geographically isolated areas such as Sardinia. In contrast, the Iceman's maternal branch originated locally
in the eastern Alps at least 5,300 years ago. The same migrations that have replaced only in part his paternal lineage caused the extinction of his maternal lineage that was inherited in a small and demographic stationary population. The groups from the eastern Alps in fact significantly increased in size only from the Bronze Age onwards, as evidenced by archaeological studies conducted in the territory inhabited by the Iceman.[...]
► Read the full story>>http://www.eurac.edu/en/news/news/Pages/newsdetails.aspx?entryid=115141
► Read the study "Whole mitochondrial DNA sequencing in Alpine populations and the genetic history of the Neolithic Tyrolean Iceman"
, published in Scientific Reports
, an online open access journal of the Nature group
► Image: The Iceman's hand is pictured.Credit: South Tyrol Museum of Archaeology/EURAC/M.Lafogler#biology