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Thread: Ancient genomic time transect from the Central Asian Steppe unravels the history of t

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    Ancient genomic time transect from the Central Asian Steppe unravels the history of t

    Interesting findings on the genetic contribution/admixture of Scythians:

    https://advances.sciencemag.org/content/7/13/eabe4414

    Last edited by desi; 03-27-2021 at 06:48 AM.

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    It would be nice if they could invest at least a small fraction of their time and budget they seemingly have for Saka/Hun people for other people of Central and South Asia. I am just frustrated about the lack of ancient post-BMAC samples from Bactria, Sogdia, Afghanistan, India, the Tarim Basin, Pamir and Iran. Probably most ancient Indo-Iranians populations around 0-1500 B.C are not tested so far and we will not answer many important questions (arrival of Indo-Aryans, arrival of West Iranics/Medes/Persians, ethnogenesis of East Iranics/Pashtuns) even with hundreds of new and fresh Saka/Hun samples.

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    Haven't read all the supplements but some samples do seem interesting. "The individuals from the ancient city of Otyrar Oasis in southern Kazakhstan show a quite distinct genetic profile. Three of five individuals (“Konyr_Tobe_300CE”) fall close to the published Kangju_250CE individuals from a similar time period and region (11), between Sarmatians and BMAC (Fig. 2C). KNT005 is shifted toward BMAC in PCA (Fig. 2C and fig. S1). Furthermore, KNT005 is the only one carrying a South Asian Y haplogroup, L1a2 (data file S1), and showing a South Asian genetic component in ADMIXTURE (Fig. 2D and fig. S2). KNT004 is shifted in PC1 toward East Asians (figs. S1 to S3). Admixture models including ~10% South Asian and ~50% eastern Eurasian influx adequately explain KNT005 and KNT004, respectively (data file S4)."

    A few R-Z93 R-Z94s assigned.
    https://docs.google.com/spreadsheets...gid=1243874174
    Last edited by Kapisa; 03-27-2021 at 11:41 AM.
    Target: Kapisa_scaled
    Distance: 1.7453% / 0.01745296
    44.4 IRN_Shahr_I_Sokhta_BA2_I8728
    35.0 UZB_Bustan_BA
    18.0 KAZ_Ak_Moustafa_MLBA1
    2.6 MNG_East_N

    Mitochondrial Haplogroup: R30b found in Shahr-I-Sokhta_BA1 subclades found in Swat IA:Leobanr, Katelai & Barikot Historic.

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    Quote Originally Posted by Coldmountains View Post
    It would be nice if they could invest at least a small fraction of their time and budget they seemingly have for Saka/Hun people for other people of Central and South Asia. I am just frustrated about the lack of ancient post-BMAC samples from Bactria, Sogdia, Afghanistan, India, the Tarim Basin, Pamir and Iran. Probably most ancient Indo-Iranians populations around 0-1500 B.C are not tested so far and we will not answer many important questions (arrival of Indo-Aryans, arrival of West Iranics/Medes/Persians, ethnogenesis of East Iranics/Pashtuns) even with hundreds of new and fresh Saka/Hun samples.
    I agree with you there. As impressive as 100 ancient samples sound, it is hard to get excited over new Scythians when we already have so many. As far as I am concerned, the only exciting individuals from this paper are the southern outliers with elevated BMAC and South Asian ancestry.

    The problem here is that most scientific articles, this one included, focused on Russia and Kazakhstan - so you get a plethora of Saka samples and barely anything else. I fail to understand why since 2018, no new samples from Uzbekistan or Tajikistan were published.

    They recovered high-quality samples from Sappali Tepe, Bustan, and other sites in Uzbekistan and Central Asia, so this is not an issue of aDNA preservation preventing them.

    Then again, I don't exactly know the situation behind the scenes with funding. If these studies are nationally funded, then obviously Russia and Kazakhstan will have a lot more cash to burn than dirt-poor Uzbekistan or Tajikistan.

    Another issue is that some of the Sogdian/Bactrian individuals that are found by pure chance are somehow classified as Sarmatians by the historically illiterate geneticists conducting that study.

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    Quote Originally Posted by desi View Post
    Interesting findings on the genetic contribution/admixture of Scythians:

    https://advances.sciencemag.org/content/7/13/eabe4414

    what this means BMAC

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    Quote Originally Posted by desi View Post
    Interesting findings on the genetic contribution/admixture of Scythians:

    https://advances.sciencemag.org/content/7/13/eabe4414

    Have these samples been added to gobal G25?

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    Quote Originally Posted by capsian View Post
    Have these samples been added to gobal G25?
    No, the raw data isn't accessible yet.

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    Quote Originally Posted by altvred View Post
    No, the raw data isn't accessible yet.
    thanks you

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    Quote Originally Posted by Kapisa View Post
    Haven't read all the supplements but some samples do seem interesting. "The individuals from the ancient city of Otyrar Oasis in southern Kazakhstan show a quite distinct genetic profile. Three of five individuals (“Konyr_Tobe_300CE”) fall close to the published Kangju_250CE individuals from a similar time period and region (11), between Sarmatians and BMAC (Fig. 2C). KNT005 is shifted toward BMAC in PCA (Fig. 2C and fig. S1). Furthermore, KNT005 is the only one carrying a South Asian Y haplogroup, L1a2 (data file S1), and showing a South Asian genetic component in ADMIXTURE (Fig. 2D and fig. S2). KNT004 is shifted in PC1 toward East Asians (figs. S1 to S3). Admixture models including ~10% South Asian and ~50% eastern Eurasian influx adequately explain KNT005 and KNT004, respectively (data file S4)."
    There is another individual who is L1a from the Kaspan cluster

    https://anthrogenica.com/showthread....l=1#post760659

    The green component is used to capture SA related admixture but I don't know if they mean 10% AASI or 10% IVC related but based of the PCA and their Histograms it looks IVC/SIS2 related because the only populations with this component in their study are the BMAC samples, Konyrtobe samples and interestingly Sarmartians

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    I never put too much stock in these admixture graphs, I'll wait until the raw data gets released.

    Also the classification of some samples are funny. Samples in the dead centre of the Massagatae/Dahae regions labelled as Sarmatians...

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