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LINK Unraveling the Prehistoric Ancestry of the Present-day Inhabitants of Northeast Africa: An Archaeogenetic Approach to Neolithisation 2013
Conclusions
This article has provided an independent genetic perspective on the Neolithisation of Northeast Africa without recourse to the valuable and equally independent corpus of archaeological data. The most important points are as follows. The existence of pre-Neolithic mtDNA and NRY continuity in Northeast Africa is securely attested, despite the magnitude of more recent migrations. The Horn of Africa represents a major Late Pleistocene-Early Holocene source of several pre-Neolithic lineages present in Northeast Africa today. These belong to mtDNA haplogroup L and NRY haplogroup E. The genetic data suggest that cows were not domesticated in Northeast Africa, and propose a hypothesis of the entry of domesticated mtDNA T1’2’3 single cows into Northeast Africa between 12 and 9 kya and the subsequent local development. The cows were brought by NRY haplogroup R1b1c-V88 males who arrived from the Levant with lactase persistence H98. Indigenous NRY haplogroup E-V22 males may have received single cows from these migrants. This hypothesis is contradicted by the slightly more recent MRCA of R1b1c, but NRY-dating is known to err on the recent side. The human migration from the Levant to Northeast Africa that included NRY haplogroup T may well be NRY-dated to shortly after 7.6 kya. NRY haplogroup J2 is strongly associated with agriculture, and the genetic data indicate an unspecified number of inflows of farmers from the Levant. An important migration of NRY haplogroup J1 pastoralists into Northeast Africa can be NRY-dated to 7 kya. These pastoralists are potentially associated with the arrival of improved sheep breeds. In conclusion, the genetic data suggest multiple human migration events. Although a large proportion of present-day inhabitants of Egypt descend from these migration events, it is certain that incoming pastoralists and farmers did not replace the entire pre-Neolithic population in Northeast Africa. Their migration was demographically less disruptive than that in the Balkans, and the pre-Neolithic population in Northeast Africa somehow adopted an agricultural or pastoral way of life at a certain point of time by themselves.
According to the high Lineage criterion, candidates that might be associated with pastoral or agricultural expansion from the Near East are revealed by their high Lineage number. Despite their high Lineage, E-M35, E-M78, E-Z827, E- Z830 and E-M81 are not extensively discussed for the following reasons. E-M35 has a generally older than 15 kya coalescence age (e.g. Arredi et al. 2004; Luis et al. 2004; Semino et al. 2004). E-M78 has an indigenous Nile Basin origin, but its coalescence age is 18.6 kya (Cruciani et al. 2007). Both are already represented below by their descendants. E-Z827 and E-Z830 lack phylogeographic data.Posts: 42929 | From: , | Registered: Jan 2010
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So more research saying V88 carriers in Africa had ancestors from the Levant. But where are the years of debating about their "blackness" and "Africaness" though? Is there any autosomal DNA from Chadic groups with high levels of V88?
Posts: 2508 | From: . | Registered: Nov 2011
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Debating whether this thread should stay open... An old paper reuploaded with no comentary and the leading discussion point appears to be a regression from what has been previously established.
quote:Originally posted by Elmaestro: Debating whether this thread should stay open... An old paper reuploaded with no comentary and the leading discussion point appears to be a regression from what has been previously established.
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