Current achievements in molecular genetics allow scientists to look not only in the depths of genomes but also back to ancient times. By analysing fossil DNA, Russian biologists have reconstructed the picture of colonisation of the Russian Northern lands. The research was supported by the Russian Foundation for Basic Research and the RF Ministry of Industry and Sciences.
Todays molecular biology is capable of analysing DNAs extracted from an ancient material up to 100,000 years old. Even Neanderthal mens DNAs can be examined. However, Russian scientists working at the V.A. Engelgardt Institute of Molecular Biology, Russian Academy of Sciences, and Institute of Archaeology, Russian Academy of Sciences, make no moves to look to such ancient history. Analysing an ancient DNA, they reconstruct the picture of Slavic colonisation of the areas to the North of the Volga and the Sukhona watershed, lying between Lake Onega and the Pechora river. The development of the area called "the Russian North" began no later than in the 11th century, and was completed in the 16th century. According to archaeologists and anthropologists, first Slavic colonists were coming to the North in small family groups, and were settling down in a detached manner. Now, genetics could also contribute to the overall picture.
The scientists examined 47 samples of mitochondrial (mt) DNA extracted from the bones found in the burial grounds of the settlements Nefedyevo, Minino, and Shuygino located in the Vologda Region, around Lake Beloye. The burial places date back to the 11th -13th centuries. DNAs were extracted from various skeleton parts but mostly from teeth. According to the researches, ancient DNAs are best preserved in teeth. All DNA isolation and research activities were performed with extreme precautions in order not to contaminate the ancient probes with modern nucleic acid. This resulted in 47 compounds of paleo-DNA; the scientists determined their structure and isolated three kinds of mt DNA typical of the people buried in the burial places. The overwhelming majority of the examined ancient persons (43) had the so-called “Cambridge” DNA type which is typical of contemporary European inhabitants. The rest four persons had other, more rarely found types, which are, however, also typical of all populations in Eastern Europe. Therefore, the examined group can positively be said to have the European background. Those having more rare types of mt DNA were buried approximately 200 years later than the others. All of them are male. In the scientists opinion, they could be born from the couples consisting of local women belonging to the Finno-Ugric group, and the settlement founders offsprings. Thus, the assimilation did not begin immediately but started during medium colonisation stages.
Sergey Komarov | Informnauka
New risk factors for anxiety disorders
24.02.2017 | Julius-Maximilians-Universität Würzburg
Stingless bees have their nests protected by soldiers
24.02.2017 | Johannes Gutenberg-Universität Mainz
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News