АвторТема: дДНК из Франции  (Прочитано 509 раз)

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дДНК из Франции
« : 07 Декабрь 2018, 18:32:20 »
The multiple maternal legacy of the Late Iron Age group of Urville-Nacqueville (France, Normandy) documents a long-standing genetic contact zone in northwestern France

    Claire-Elise Fischer ,
    Anthony Lefort,
    Marie-Hélène Pemonge,
    Christine Couture-Veschambre,
    Stéphane Rottier,
    Marie-France Deguilloux

PLOS

    Published: December 6, 2018
    https://doi.org/10.1371/journal.pone.0207459

Abstract

The compilation of archaeological and genetic data for ancient European human groups has provided persuasive evidence for a complex series of migrations, population replacements and admixture until the Bronze Age. If the Bronze-to-Iron Age transition has been well documented archaeologically, ancient DNA (aDNA) remains rare for the latter period and does not precisely reflect the genetic diversity of European Celtic groups. In order to document the evolution of European communities, we analysed 45 individuals from the Late Iron Age (La Tène) Urville-Nacqueville necropolis in northwestern France, a region recognized as a major cultural contact zone between groups from both sides of the Channel. The characterization of 37 HVS-I mitochondrial sequences and 40 haplogroups provided the largest maternal gene pool yet recovered for the European Iron Age. First, descriptive analyses allowed us to demonstrate the presence of substantial amounts of steppe-related mitochondrial ancestry in the community, which is consistent with the expansion of Bell Beaker groups bearing an important steppe legacy in northwestern Europe at approximately 2500 BC. Second, maternal genetic affinities highlighted with Bronze Age groups from Great Britain and the Iberian Peninsula regions tends to support the idea that the continuous cultural exchanges documented archaeologically across the Channel and along the Atlantic coast (during and after the Bronze Age period) were accompanied by significant gene flow. Lastly, our results suggest a maternal genetic continuity between Bronze Age and Iron Age groups that would argue in favour of a cultural transition linked to progressive local economic changes rather than to a massive influx of allochthone groups. The palaeogenetic data gathered for the Urville-Nacqueville group constitute an important step in the biological characterization of European Iron age groups. Clearly, more numerous and diachronic aDNA data are needed to fully understand the complex relationship between the cultural and biological evolution of groups from the period.

Очень неглубокое тестирование, mtDNA 2 J1,2 U5,2 U4, 2 V,8 H, 6 H1, 2 N1a or I, 8 K, 2 T, H1 or J1, H3, U*;  Y 3 R.

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  • мтДНК: T2a1a
Re: дДНК из Франции
« Ответ #1 : 07 Декабрь 2018, 18:42:04 »
Очень неглубокое тестирование, mtDNA 2 J1,2 U5,2 U4, 2 V,8 H, 6 H1, 2 N1a or I, 8 K, 2 T, H1 or J1, H3, U*;  Y 3 R.
Да уж...Ни о чем.
"Y-chromosome detection had some inconsistencies, but pointed to the presence of R haplogroups for three individuals. Further differentiation between sub-haplogroups R1a/R1b was not possible since attempts to identify R sub-lineages produced conflicting results."

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Re: дДНК из Франции
« Ответ #2 : 07 Декабрь 2018, 21:38:28 »
"6 H1"
Так то это круто. но хотелось бы подробностей, особенно на предмет наличия H1C

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Re: дДНК из Франции
« Ответ #3 : 08 Декабрь 2018, 00:11:33 »
Да уж...Ни о чем.
"Y-chromosome detection had some inconsistencies, but pointed to the presence of R haplogroups for three individuals. Further differentiation between sub-haplogroups R1a/R1b was not possible since attempts to identify R sub-lineages produced conflicting results."

Ну, РАН тоже Биги не делает. :D На 6 маркерах до сих пор что ли. 37 это уже космос.

В выводе кстати ни слова о Игрек хромосоме, только о мито:

Conclusion

Our study provides new insights into the maternal legacy of Iron Age communities in Western Europe. The description of the mtDNA gene pool of the Urville-Nacqueville community, the largest-ever characterized for a European Iron Age context, highlighted new scenarios for ancient European population interactions and evolution. The first major finding is the presence of significant amounts of maternal steppe-related ancestry in the UN community, a finding that could fit with the transmission of these lineages by both Bell Beaker groups expanding across northwestern Europe approximately 2500 BC and Bronze Age groups arriving later in France. The UN maternal diversity also proved to result from diverse and significant genetic interactions with ancient groups from Great Britain and Spain. These results are highly reminiscent of the continuous and intensive cultural exchanges documented in the archeological record on the other side of the Channel or along the Atlantic coast during and after the Bronze Age period. The palaeogenetic arguments provided by our study would therefore support an important gene flow having accompanied these maritime cultural exchanges and that the northwestern French regions may have served as a regular genetic contact zone between the north and south over extended periods. Evidently, further palaeogenetic/palaeogenomic data from different chronological groups distributed along this north-south axis are needed to more fully appreciate interaction dynamics between human groups from these regions during the Neolithic, Bronze Age and Iron Age periods.

Our study also provided convincing arguments for maternal genetic continuity both between Bronze Age groups and the UN community and between the ancient UN group and extant populations from northwestern Europe. We consider that the most parsimonious explanation for the observed genetic continuity would be a Bronze-to-Iron Age transition linked to progressive local economic changes rather than to a massive influx of allochthone groups. The second genetic continuity measured with extant populations would, to a certain extent, support an idea still found in current French scholarly books: “Our ancestors the Gauls.” Nevertheless, numerous results now available for ancient European groups have highlighted substantial population turnovers during prehistory, such as those linked to European Neolithization or the subsequent migrations of groups bearing steppe-related ancestry. Our palaeogenetic results, combined with data form the palaeogenetic / palaeogenomic literature, would argue that “our ancestors the Gauls” who actually contributed to present-day French gene pool were themselves bearers of a maternal legacy from all anterior groups, with a major contribution from late Neolithic / Bronze Age populations.


https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0207459#sec011


 

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