Talk:Naia (skeleton)

Beringian origin for Naia's Subhaplogroup D1 DNA in doubt.
Chatters et al.(2014) regards MtDNA Subhaplogroup D1, sampled from Naia, as having originated in Beringia on the authority of Tamm et al.(2007). Tamm et al.(2007) deduced Beringian origins of haplotypes based on their absence from their samples of north Asian populations regarded as potential sources for migration into Beringia:
 * "...samples from 26 Asian populations (51 Eskimos; 155 Chukchi; 120 Selkups; 66 Kets; 70 Tundra Nenets; 275 Tuvas; 185 Khakas; 339 Altaians; 170 Shors; 71 Koryaks; 85 Nanais; 122 Uyghurs; 406 Kazakhs; 58 Gilyaks; 61 Oroks; 105 Kirghiz; 48 Uzbeks; 38 Tajiks; 201 Buriats; 324 Evenks; 105 Evens; 22 Yukaghirs; 423 Yakuts; 157 Dolgans; 107 Nganasans)."

Starikovskaya et al. (2005) found Subhaplogroup D1 mtDNA among the Ulchis of the lower Amur River (neighbors of the Oroks sampled in the Tamm et al. study). Adachi et al.(2010) reported a subclade of Subhaplogroup D1 (D1a) sampled from Jōmon skeletons at the Funadomari Cave site on Hokkaido. Both undercut the argument that D1 is Beringian in origin. The Jōmon are considered descendants of the same population that has been proposed as the source population for skeletons in the Americas with the phenotypic characteristics of Naia. Naia's phenotypic and genetic traits both are consistent with heritage from a proto-Jōmon population.

Tamm et al.(2007) could not have known about the findings of Adachi et al.(2010). Tamm et al. (2007) included Starikovskaya et al. (2005) in their references, but for reasons not explained did not acknowledge the results of Starikovskaya et al. regarding D1, which directly contradict their rationale for calling D1 specific to Native Americans. The reason for the findings of Adachi et al. (2010) and Starikovskaya et al. (2005) not being considered in Chatters et al.(2014) are not clear either. It is apparent that their conclusion that the phenotypic group represented by Naia can be lumped in with Beringian-derived Native American phenotypes on the basis of MtDNA is not supported by Subhaplogroup D1 DNA from Naia in the light of the findings of Adachi et al. (2010) and Starikovskaya et al.(2005)

The article needs to be clear that the Chatters et al.(2014) conclusion is based on Subhaplogroup D1 DNA from Naia and that ancient and modern Subhaplogroup D1 DNA (D1a subclade) have been sampled on Hokkaido and in the lower Amur region.75.111.54.141 (talk) 04:27, 27 April 2015 (UTC)


 * You'd need sources discussing the Chatters et al article. Doug Weller  talk 12:44, 16 October 2016 (UTC)

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