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Thread: J2b2 (J-M241)

  1. #441
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    Quote Originally Posted by agent_lime View Post
    Hello fellow j2b2's. Still reading much of this thread.
    The user 'client' sent me the data to the a study about J-M241 distribution in the greater South Asian region (unfortunately I'm unable to upload the excel file). In South Asia, it seems to be at highest frequency in the Austro-Asiatic Asur Tribals at 78% of 40 samples from the Chota Nagpur Plateau (possibly due to founder effect). However, it seems to be distributed quite evenly throughout most of the region ranging from similar concentrations in Bengal (9-10% of the population) to Kashmir in the North (at 5-9%) to Sindh in the west (at 5%). Though from older studies, Vellalars of Tamil Nadu/Sri Lanka (a SI mid caste) have the highest concentrations (38%+) among caste populations.

    I found a similar study however with similar results (you might have seen it), though with more moderate concentrations among tribal groups.

    Edit: think its the same study that he sent.
    Attached Files Attached Files
    Last edited by Kulin; 04-21-2019 at 01:08 AM.

  2. The Following 3 Users Say Thank You to Kulin For This Useful Post:

     agent_lime (04-21-2019),  discreetmaverick (12-11-2019),  parasar (05-14-2019)

  3. #442
    Quote Originally Posted by Kulin View Post
    The user 'client' sent me the data to the a study about J-M241 distribution in the greater South Asian region (unfortunately I'm unable to upload the excel file). In South Asia, it seems to be at highest frequency in the Austro-Asiatic Asur Tribals at 78% of 40 samples from the Chota Nagpur Plateau (possibly due to founder effect). However, it seems to be distributed quite evenly throughout most of the region ranging from similar concentrations in Bengal (9-10% of the population) to Kashmir in the North (at 5-9%) to Sindh in the west (at 5%). Though from older studies, Vellalars of Tamil Nadu/Sri Lanka (a SI mid caste) have the highest concentrations (38%+) among caste populations.

    I found a similar study however with similar results (you might have seen it), though with more moderate concentrations among tribal groups.

    Edit: think its the same study that he sent.
    I have read the study you kindly attached,

    and it conclude the following:

    1. J2a and J2b was not spread through Eurasian demic diffusion.
    2.J2a-M410 and J2b-M102 from
    Near East to NW region and further eastwards of the subcontinent seems to have unique and complex history of
    various known and unknown possible events

    3.NW region appears to
    be the corridor for entry of these haplogroups into India------ that means it originated from the fertile crescent

    3. Most likely events responsible

    for the current distribution of J2-M172 sublineages into Indian subcontinent could be any combination of
    1) entry of herders from West and Central Asia/Middle East during late glacial maximum (LGM) of Holocene,
    2)Neolithic demic diffusion from the West, and 3) Bronze and Iron age migration/admixtures.

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