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Thread: Whole Y-chromosome sequences reveal an extremely recent origin of E-M81

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    Whole Y-chromosome sequences reveal an extremely recent origin of E-M81

    Was already posted in "New DNA Papers" :


    Whole Y-chromosome sequences reveal an extremely recent origin of the most common North African paternal lineage E-M183 (M81).

    Solé-Morata N1, García-Fernández C1, Urasin V2, Bekada A3, Fadhlaoui-Zid K4, Zalloua P5, Comas D6, Calafell F7.
    Author information
    Abstract
    E-M183 (E-M81) is the most frequent paternal lineage in North Africa and thus it must be considered to explore past historical and demographical processes. Here, by using whole Y chromosome sequences from 32 North African individuals, we have identified five new branches within E-M183. The validation of these variants in more than 200 North African samples, from which we also have information of 13 Y-STRs, has revealed a strong resemblance among E-M183 Y-STR haplotypes that pointed to a rapid expansion of this haplogroup. Moreover, for the first time, by using both SNP and STR data, we have provided updated estimates of the times-to-the-most-recent-common-ancestor (TMRCA) for E-M183, which evidenced an extremely recent origin of this haplogroup (2,000-3,000 ya). Our results also showed a lack of population structure within the E-M183 branch, which could be explained by the recent and rapid expansion of this haplogroup. In spite of a reduction in STR heterozygosity towards the West, which would point to an origin in the Near East, ancient DNA evidence together with our TMRCA estimates point to a local origin of E-M183 in NW Africa.


    https://www.nature.com/articles/s41598-017-16271-y


    Same TMRCA calculated by Yfull

    https://www.yfull.com/tree/E-M81/


    So according to TMRCA (Time of Most Recent Common Ancestor) estimates, all carriers of this haplogroup descend from a common ancestor who lived only about 2,200 years ago...
    Last edited by E_M81_I3A; 11-25-2017 at 03:10 PM.
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    Y Dna: E-M81-->CTS12227-->BY8900 : The oldest M81 known are Guanches 2000 BP
    MtDna: I3a1 : The oldest I3a1 known is VK164, Viking from Oxford, UK, 880-1000 CE.


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