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كاتب الموضوع :
Truth
المنتدى :
الدراسات والبحوث حول النتائج
بتاريخ : 03-26-2018 الساعة : 07:47 AM
The genotyping results for A3-M13 confirmed its very high geographic differentiation, with most lineages restricted to one geographic area. There are few exceptions to this general pattern, i.e. A3-V2742*, A3-V2816* and A3-V3800, which were found in two different regions, usually belonging to the same geographical macro-area (Additional file 2: Figure S3). While A3-V1018 is restricted to the Horn of Africa, its sister clade, A3-V5912, is more widespread, arriving as far as southern Europe (more specifically, Sardinia) (Additional file 1: Table S5). Most of the Mediterranean lineages coalesced with sub-Saharan clades in a time window between 10.24 and 6.45 kya (where the upper and lower limit are the coalescence ages of A3-V5912 and A3-V2336, respectively) (Fig. 3b), during the last humid phase of the Sahara (12–5 kya). After this period, the lineages are restricted to sub-Saharan Africa or northern Africa. It is worth noting that A3-V4735 has been found both in central Sahel and in the Great Lakes region (Kenya and Uganda) in eastern Africa, suggesting a movement along the Sahelian belt starting during the final period of the last Green Sahara (6.02–5.30 kya).
https://genomebiology.biomedcentral....059-018-1393-5
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