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RCO
06-03-2014, 12:33 PM
Strong genetic admixture in the Altai at the Middle Bronze Age revealed by uniparental and ancestry informative markers
Clémence Hollarda, Christine Keysera, Pierre-Henri Giscardb, Turbat Tsagaanc, Noost Bayarkhuuc, Jan Bemmannd, Eric Crubézye, Bertrand Ludese

Forensic Science International: Genetics
Available online 2 June 2014

Abstract

The Altai Mountains have been a long term boundary zone between the Eurasian Steppe populations and South and East Asian populations. To disentangle some of the historical population movements in this area, 14 ancient human specimens excavated in the westernmost part of the Mongolian Altai were studied. Thirteen of them were dated from the Middle to the End of the Bronze Age and one of them to the Eneolithic period. The environmental conditions encountered in this region led to the good preservation of DNA in the human remains. Therefore, a multi-markers approach was adopted for the genetic analysis of identity, ancestry and phenotype markers. Mitochondrial DNA analyses revealed that the ancient Altaians studied carried both Western (H, U, T) and Eastern (A, C, D) Eurasian lineages. In the same way, the patrilineal gene pool revealed the presence of different haplogroups (Q1a2a1-L54, R1a1a1b2-Z93 and C), probably marking different origins for the male paternal lineages. To go further in the search of the origin of these ancient specimens, phenotypical characters (ie: hair and eye colour) were determined. For this purpose, we adapted the HIrisPlex assay recently described to MALDI-TOF mass spectrometry. In addition, some ancestry informative markers were analyzed with this assay. The results revealed mixed phenotypes among this group confirming the probable admixed ancestry of the studied Altaian population at the Middle Bronze Age. The good results obtained from ancient DNA samples suggest that this approach might be relevant for forensic casework too.

http://www.sciencedirect.com/science/article/pii/S1872497314001161

parasar
06-03-2014, 12:41 PM
Increases the likelihood that the Andronovo and later South Siberian and Tarim R1a were Z93.

R.Rocca
06-03-2014, 03:56 PM
Does anyone know what the male/female breakdown was for the 14 specimens and how many were R1a1a1b2-Z93, Q1a2a1-L54 and and C respectively?

DMXX
06-03-2014, 04:03 PM
Increases the likelihood that the Andronovo and later South Siberian and Tarim R1a were Z93.

It's certainly consistent with the Underhill R1a revamp that came out recently, which found the majority of R1a in Asia is Z93+.

This finding adds yet more support to the notion that the principal split in R1a (Z280 and Z93) is dictated by geography above all else.

R.Rocca
06-03-2014, 04:37 PM
Does anyone know what the male/female breakdown was for the 14 specimens and how many were R1a1a1b2-Z93, Q1a2a1-L54 and and C respectively?

I don't have enough time to post a table, but of the nine males, four were R1a-Z93, three were Q1a-L54, one was Q-M242 and one was C-M130. All were dated around ~1,371-914 BC except for the Q-M242 sample which was much older at ~2,742 BC.

parasar
06-03-2014, 04:44 PM
It's certainly consistent with the Underhill R1a revamp that came out recently, which found the majority of R1a in Asia is Z93+.

This finding adds yet more support to the notion that the principal split in R1a (Z280 and Z93) is dictated by geography above all else.


Underhill et al, 2014:
Z93 Siberia
region total 41 16 12 13 17 24 11 11 13 10 10
Khakass 24 16 12 13 17 24 11 11 13 10 10
Altaians 16 16 12 14 17 26 11 11 13 11 10

Z282
Altaian 1 17 12 13 18 24 11 11 14 10 10

We have to remember though that all major splits under Z645 (Z93/L657/Z2124, Z283) came within a few hundred years of each other.

venustas
06-03-2014, 06:29 PM
These people from the Mongolian Altai, are related to the northern Altai people who live in Russia.

Jean M
06-03-2014, 06:36 PM
I don't have enough time to post a table

The data is now online in http://www.ancestraljourneys.org/ancientdna.shtml

venustas
06-03-2014, 06:42 PM
The data is now online in http://www.ancestraljourneys.org/ancientdna.shtml

The Neolithic sample had R1b1 mtdna?

R.Rocca
06-03-2014, 07:18 PM
The Neolithic sample had R1b1 mtdna?

All the samples were Copper Age and later.

Jean M
06-03-2014, 07:37 PM
The Neolithic sample had R1b1 mtdna?

That is correct, except that "eneolithic" in the paper means "Copper Age".