Results 1 to 8 of 8

Thread: .. East African HG pops and insights into local adaptation (Scheinfeldt, 2019)

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Moderator
    Posts
    759
    Sex
    Ethnicity
    Central/E. Sudanic
    Y-DNA (P)
    A-M13 (A-Y95250*)
    mtDNA (M)
    L3x2b
    Y-DNA (M)
    B2a1
    mtDNA (P)
    L2e*

    Canada Uganda

    .. East African HG pops and insights into local adaptation (Scheinfeldt, 2019)

    Genomic evidence for shared common ancestry of East African hunting-gathering populations and insights into local adaptation (Scheinfeldt, 2019)



    Abstract:

    Anatomically modern humans arose in Africa ∼300,000 years ago, but the demographic and adaptive histories of African populations are not well-characterized. Here, we have generated a genome-wide dataset from 840 Africans, residing in western, eastern, southern, and northern Africa, belonging to 50 ethnicities, and speaking languages belonging to four language families. In addition to agriculturalists and pastoralists, our study includes 16 populations that practice, or until recently have practiced, a hunting-gathering (HG) lifestyle. We observe that genetic structure in Africa is broadly correlated not only with geography, but to a lesser extent, with linguistic affiliation and subsistence strategy. Four East African HG (EHG) populations that are geographically distant from each other show evidence of common ancestry: the Hadza and Sandawe in Tanzania, who speak languages with clicks classified as Khoisan; the Dahalo in Kenya, whose language has remnant clicks; and the Sabue in Ethiopia, who speak an unclassified language. Additionally, we observed common ancestry between central African rainforest HGs and southern African San, the latter of whom speak languages with clicks classified as Khoisan. With the exception of the EHG, central African rainforest HGs, and San, other HG groups in Africa appear genetically similar to neighboring agriculturalist or pastoralist populations. We additionally demonstrate that infectious disease, immune response, and diet have played important roles in the adaptive landscape of African history. However, while the broad biological processes involved in recent human adaptation in Africa are often consistent across populations, the specific loci affected by selective pressures more often vary across populations.


    Supplement below is found here (courtesy of Lank ; )


    Figure S4. ADMIX results K2-K9:

     

    Figure S9. PCA:
     
    Last edited by Angoliga; 02-20-2019 at 05:08 PM.
    .... .. I have spoken."

  2. The Following 17 Users Say Thank You to Angoliga For This Useful Post:

     blackflash16 (02-20-2019),  Deftextra (02-27-2019),  Don Felipe (02-20-2019),  drobbah (02-21-2019),  JFWinstone (02-20-2019),  Lank (02-20-2019),  Megalophias (02-19-2019),  NetNomad (02-20-2019),  Nimrod Son of Cush (02-24-2019),  Numidian (02-20-2019),  Onur Dincer (02-19-2019),  pgbk87 (02-22-2019),  pmokeefe (02-20-2019),  RCO (02-20-2019),  Shamayim (02-24-2019),  Táltos (02-22-2019),  traject (02-20-2019)

Similar Threads

  1. Replies: 24
    Last Post: 05-28-2020, 10:58 PM
  2. East African vs West African
    By JFWinstone in forum African
    Replies: 4
    Last Post: 03-07-2017, 01:31 PM
  3. Replies: 0
    Last Post: 09-18-2016, 06:28 PM
  4. Replies: 2
    Last Post: 06-13-2015, 12:51 AM
  5. Sunlight adaptation from Neanderthals to East Asians
    By Jean M in forum Human Evolution
    Replies: 0
    Last Post: 01-11-2014, 12:56 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •