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Ancient Native Americans related to modern ones

07 Jul
Sequencing of ancient Native American remains from British Columbia (Canada), dated to c. 5-6000 years ago, shows that many modern local natives are their apparent descendants or otherwise related.
Yinqiu Cui et al. Ancient DNA Analysis of Mid-Holocene Individuals from the Northwest Coast of North America Reveals Different Evolutionary Paths for Mitogenomes. PLoS ONE 2013. Open accessLINK [doi:10.1371/journal.pone.0066948]
Abstract

To gain a better understanding of North American population history, complete mitochondrial genomes (mitogenomes) were generated from four ancient and three living individuals of the northern Northwest Coast of North America, specifically the north coast of British Columbia, Canada, current home to the indigenous Tsimshian, Haida, and Nisga’a. The mitogenomes of all individuals were previously unknown and assigned to new sub-haplogroup designations D4h3a7, A2ag and A2ah. The analysis of mitogenomes allows for more detailed analyses of presumed ancestor–descendant relationships than sequencing only the HVSI region of the mitochondrial genome, a more traditional approach in local population studies. The results of this study provide contrasting examples of the evolution of Native American mitogenomes. Those belonging to sub-haplogroups A2ag and A2ah exhibit temporal continuity in this region for 5000 years up until the present day. Of possible associative significance is that archaeologically identified house structures in this region maintain similar characteristics for this same period of time, demonstrating cultural continuity in residence patterns. The individual dated to 6000 years before present (BP) exhibited a mitogenome belonging to sub-haplogroup D4h3a. This sub-haplogroup was earlier identified in the same general area at 10300 years BP on Prince of Wales Island, Alaska, and may have gone extinct, as it has not been observed in any living individuals of the Northwest Coast. The presented case studies demonstrate the different evolutionary paths of mitogenomes over time on the Northwest Coast.

Figure 2. Phylogeny of complete mitochondrial genomes sequenced in this study.
Mutations
are transitions unless specified. Transversions are indicated by an A,
G, C, or T after the nucleotide position. Insertions are indicated by an
“i”, deletions are indicated by a “d”, recurrent mutations are
underlined, and mutations back to the rCRS nucleotide are designated by a
“@”. The C stretch length polymorphism in region 303–315 was
disregarded in the tree. The sample “Haida 9″ was analyzed in Schurr et
al. (2012). All other samples were analyzed in this study.
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1 Comment

Posted by on July 7, 2013 in aDNA, America, mtDNA, Native Americans, Paleolithic

 

One response to “Ancient Native Americans related to modern ones

  1. Joe

    September 16, 2013 at 2:38 am

    Of course they are related to modern native Americans. 10,300ybp Y DNA sample from Canada had unqiulley Native American Q M3 not a surprise. This haplogroup is actulley nearlyy 100% in native American Q M3 should be called the the father of Native Americans. Also 14,000 ybp mtDNA sample from Oregan had Unique native American B2. Native Americans are one of the most unfied and undiverse people in the world. They all fall under unqiue mtDNA haplogroups except X2a which was brought over by Caucasians orignally from the mid east 15,000-20,000ybp and exists in Druze in Isreal. The other Y DNa they have so R1* and C came probably with later migrations the C is with Na Dene so like Eskimos who came 6,000-10,000ybp. The R1* also may be from later migrations.

    In aust DNa native Americans also form into one group from all the tests i have seen. Native Americans ancestors would have arrived 25,000-30,000ybp.

     

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