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Thread: Demographic history of tribal and caste groups from West Maharashtra

  1. #1
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    Demographic history of tribal and caste groups from West Maharashtra

    I found this recent paper on the genetics of tribal and caste groups from West Maharashtra. Is there anyone from that region in this forum?:

    Abstract
    The South Asian subcontinent is characterized by a complex history of human migrations and population interactions. In this study, we used genome-wide data to provide novel insights on the demographic history and population relationships of six Indo-European populations from the Indian State of West Maharashtra. The samples correspond to two castes (Deshastha Brahmins and Kunbi Marathas) and four tribal groups (Kokana, Warli, Bhil and Pawara). We show that tribal groups have had much smaller effective population sizes than castes, and that genetic drift has had a higher impact in tribal populations. We also show clear affinities between the Bhil and Pawara tribes, and to a lesser extent, between the Warli and Kokana tribes. Our comparisons with available modern and ancient DNA datasets from South Asia indicate that the Brahmin caste has higher Ancient Iranian and Steppe pastoralist contributions than the Kunbi Marathas caste. Additionally, in contrast to the two castes, tribal groups have very high Ancient Ancestral South Indian (AASI) contributions. Indo-European tribal groups tend to have higher Steppe contributions than Dravidian tribal groups, providing further support for the hypothesis that Steppe pastoralists were the source of Indo-European languages in South Asia, as well as Europe.
    https://www.nature.com/articles/s41598-020-66953-3

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    Yea I was carried in an article by Brown pundits

    The following diagram generated by the K3 clusteringis interesting. Shows Kunbi Marathas have lesser Ganj Derah than Desasth Brahmin and other South groups like ITU



    Neighbourhood tree shows Kunbi closer to STU then to ITU, whereas Desasth Brahmin closer to GIH
    Y: H-M69 -> H-M82 -> SK1225 -> H-Z5888 -> H-Z5890 -> H-CTS8144 [CTS8144/PF1741/M5498] -> Z34531 (H1a1a4b3b1a8~)
    found 2875 BCE -> Jiroft/IVC Periphery 11459 Shahr-i-Sokte BA2
    mtDNA:U2a1a

    G25 Ancients Dist 0.79 IND_Roopkund_A 51.05 IRN_Shahr_I_Sokhta_BA2 46.64 MAR_Iberomaurusian2.04PAK_Katelai_IA0.19 TKM_Gonur2_BA 0.08

    Lactose Persistence rs3213871 rs4988243 rs4988183 rs3769005 rs2236783
    found -> DA125, Kangju

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    What about Marathas further inland such as in Nagpur?

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    Quote Originally Posted by deuterium_1 View Post
    What about Marathas further inland such as in Nagpur?
    They just have Kunbis who have less Iran_N like Ganj Derah compared to other groups like ITU but on avg little bit more MLBA. Some Kulin Marathas might have more Ganj Derah or Central Steppe compared to these Kunbi Marathas but no data on that. The KM group shows as 70.7% AASI, 23.3% Agricultaralist, 5.9% Mlba which almost 5% less Agri than ITU set & 3.5% more MLBA
    Y: H-M69 -> H-M82 -> SK1225 -> H-Z5888 -> H-Z5890 -> H-CTS8144 [CTS8144/PF1741/M5498] -> Z34531 (H1a1a4b3b1a8~)
    found 2875 BCE -> Jiroft/IVC Periphery 11459 Shahr-i-Sokte BA2
    mtDNA:U2a1a

    G25 Ancients Dist 0.79 IND_Roopkund_A 51.05 IRN_Shahr_I_Sokhta_BA2 46.64 MAR_Iberomaurusian2.04PAK_Katelai_IA0.19 TKM_Gonur2_BA 0.08

    Lactose Persistence rs3213871 rs4988243 rs4988183 rs3769005 rs2236783
    found -> DA125, Kangju

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    Quote Originally Posted by deuterium_1 View Post
    I found this recent paper on the genetics of tribal and caste groups from West Maharashtra. Is there anyone from that region in this forum?:



    https://www.nature.com/articles/s41598-020-66953-3
    West Maharastra refers to Maharastra as Maharastra is considered west or region of within Maharastra which is called Paschim (West) Maharashtra?
    https://en.wikipedia.org/wiki/Paschim_Maharashtra

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    Quote Originally Posted by discreetmaverick View Post
    West Maharastra refers to Maharastra as Maharastra is considered west or region of within Maharastra which is called Paschim (West) Maharashtra?
    https://en.wikipedia.org/wiki/Paschim_Maharashtra
    I am not sure, sadly I don't know the region well.

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    No Y-DNA results unfortunately.

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    Quote Originally Posted by J Man View Post
    No Y-DNA results unfortunately.
    Some comments on Y-DNA in Maha from prev study shows these samples might be majoirty R1a, H, J2b2, R2, L in that order

    Haplogroup H is much more common in the East (35-75%, after excluding the Korku) than in the West (8-23%).

    Haplogroup R1a1 is instead more common in the West (26-48%) than in the East (0-31%).

    R2 also seems somewhat more common in the West (4-20%) than in the East (0-20%, with only two populations really notable for this clade here: Maratha and Dhangar).

    J2 (which is mostly J2a) also appears more important in the coast (14-27%) than in the interior (0-15%).
    Y: H-M69 -> H-M82 -> SK1225 -> H-Z5888 -> H-Z5890 -> H-CTS8144 [CTS8144/PF1741/M5498] -> Z34531 (H1a1a4b3b1a8~)
    found 2875 BCE -> Jiroft/IVC Periphery 11459 Shahr-i-Sokte BA2
    mtDNA:U2a1a

    G25 Ancients Dist 0.79 IND_Roopkund_A 51.05 IRN_Shahr_I_Sokhta_BA2 46.64 MAR_Iberomaurusian2.04PAK_Katelai_IA0.19 TKM_Gonur2_BA 0.08

    Lactose Persistence rs3213871 rs4988243 rs4988183 rs3769005 rs2236783
    found -> DA125, Kangju

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    Are there any Maratha users on this forum?

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    Quote Originally Posted by tipirneni View Post
    J2 (which is mostly J2a) also appears more important in the coast (14-27%) than in the interior (0-15%).

    What's this from? I have read all over that J2 is quite prevalent across India, until it hits the East/Northeast and peaks in West India, likely following the original Indian Cline of IVC periphery people.

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