Results 1 to 4 of 4

Thread: The Genetic Structure of the World's First Farmers

  1. #1
    Senior Member Catterick's Avatar
    Join Date
    Apr 2016
    Last Online
    Thursday, September 7th, 2017 @ 12:29 AM
    Ethnicity
    Mixed Germanic and Celtic
    Ancestry
    British Isles & Scandinavia
    Subrace
    Borreby x Nordic
    Country
    Other Other
    Location
    Aqua
    Gender
    Family
    Single adult
    Occupation
    Gondolier
    Posts
    2,200
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    20
    Thanked in
    20 Posts

    The Genetic Structure of the World's First Farmers

    Looking at the scattergram it would be interesting to match the clusters to phenotypes, for example, the Natufians as Protomediterraneans. Neolithic Levantines are shifted away from Natufians towards other Neolithic farmers, and Bronze Age Levantines are shifted towards Iran and Transcaucasus. Populations in Iran and Anatolia but not Europe also start plotting towards the Transcaucasians by the Chalcolithic.

    The Neolithic Levantines are Pre-Pottery Neolithic and the stone age Iranian samples include a possible Mesolithic individual (Hotu Gorge). There are no North Africans in the study despite the long history of connecting Iberomaurusian, Capsian and Neolithic Maghrebis to populations or cultures of Europe and the Levant.

    Present-day sub-Saharan Africans do not share more alleles with Natufians than with other ancient Eurasians. Basal Eurasian ancestry in the Natufians is consistent with stemming from the same population as that in the Neolithic and Mesolithic Iranians, and is not greater than in those populations. In other words the Basal Eurasian component was not introduced via Natufians.

    SHG is the Scandinavian hunter gatherers who plot between EHG and WHG.

    The authors claim that Western Eurasian population history is found to involve gene flow in the northeastern (Neolithic Iran/EHG) and southwestern (Levant/WHG) interaction spheres.

    http://biorxiv.org/content/early/2016/06/16/059311


    We report genome-wide ancient DNA from 44 ancient Near Easterners ranging in time between ~12,000-1,400 BCE, from Natufian hunter-gatherers to Bronze Age farmers. We show that the earliest populations of the Near East derived around half their ancestry from a 'Basal Eurasian' lineage that had little if any Neanderthal admixture and that separated from other non-African lineages prior to their separation from each other. The first farmers of the southern Levant (Israel and Jordan) and Zagros Mountains (Iran) were strongly genetically differentiated, and each descended from local hunter-gatherers. By the time of the Bronze Age, these two populations and Anatolian-related farmers had mixed with each other and with the hunter-gatherers of Europe to drastically reduce genetic differentiation. The impact of the Near Eastern farmers extended beyond the Near East: farmers related to those of Anatolia spread westward into Europe; farmers related to those of the Levant spread southward into East Africa; farmers related to those from Iran spread northward into the Eurasian steppe; and people related to both the early farmers of Iran and to the pastoralists of the Eurasian steppe spread eastward into South Asia.

  2. #2
    Senior Member Catterick's Avatar
    Join Date
    Apr 2016
    Last Online
    Thursday, September 7th, 2017 @ 12:29 AM
    Ethnicity
    Mixed Germanic and Celtic
    Ancestry
    British Isles & Scandinavia
    Subrace
    Borreby x Nordic
    Country
    Other Other
    Location
    Aqua
    Gender
    Family
    Single adult
    Occupation
    Gondolier
    Posts
    2,200
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    20
    Thanked in
    20 Posts
    Looking at that scattergram, the left hand side distinguishes the European HGs of the UP and Mesolithic, who as we know from recent craniometric studies are close to the Forest Neolithic people of Northeastern Europe and therefore to the living Northeast Euros (Ladogans, Baltics). This principal component distinguishes a European UP/Mesolothic substrate of HGs from the people on the opposite side of the graph, who are roughly Coon's Basic Mediterraneans and their evolved derivatives.

    On this Basic Mediterranean side are the well known Protomediterranean Natufians and the stone age Iranians, whose racial type Coon described as "Afghanian" and connected to Cordeds and Nordics. So this side of the graph represents a second, separate race within whites as well as the geographic distance between the west and east. Europe and Asia Minor are mixed between Basic Mediterraneans and UP survivors just as Coon had predicted.

    Now return to those two "interaction spheres" over time, one of them is in the north and the east, and the other is in the south and the west. The interaction sphere from pre-Neolithic Eastern Europe and Scandinavia to Iran might relate to the formation of the Nordic race by the mixture of people north of the Black Sea and later absorbing a broader-skulled race already resident in Europe (the Beaker folk) which caused the Nordic tendency to mesocranialism.

    Further to the south, the second zone of interaction fits the old idea of a brunet Mediterranean race spread across from the Levant to the Atlantic coast of Europe, including Asia Minor and the Aegean region. In the western area people of the Mesolithic became absorbed into the classic Mediterranean racial stock creating the semi-Cromagnoid Berids but further east in places like Palestine they did not.

    Europe_LNBA populations plot as a blending between Neolithic farmers from Anatolia and the incipiently Nordic populations from the steppe, both of these source populations were already blended with the European HGs at the time.

  3. #3
    Senior Member
    Join Date
    Apr 2016
    Last Online
    Friday, October 7th, 2016 @ 02:13 AM
    Ethnicity
    Anglo-American
    Country
    Other Other
    State
    Cape Province Cape Province
    Gender
    Family
    Youth
    Religion
    none
    Posts
    972
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    2
    Thanked in
    2 Posts
    Nice analysis Catterick.

  4. #4
    Senior Member Catterick's Avatar
    Join Date
    Apr 2016
    Last Online
    Thursday, September 7th, 2017 @ 12:29 AM
    Ethnicity
    Mixed Germanic and Celtic
    Ancestry
    British Isles & Scandinavia
    Subrace
    Borreby x Nordic
    Country
    Other Other
    Location
    Aqua
    Gender
    Family
    Single adult
    Occupation
    Gondolier
    Posts
    2,200
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    20
    Thanked in
    20 Posts
    Quote Originally Posted by Shadow View Post
    Nice analysis Catterick.
    Its still difficult to figure out but some of these plots do fit with racial types. Iran, the Levant, Neolithic Asia Minor.

    The northern interaction sphere was easy enough to figure out as it corresponds to the ANE component's migration westwards and physical anthro sources about Nordic origins, not to mention Indo-Europeanistics. However though Coon's Afghanian is implicated in Nordic origins, the Danubians and Cappadocians plot well away, much closer to the Epipaleolithic Natufians (Protomediterraneans). Therefore Larry Angel's suggested composition of Nordic-Iranians is unsupported here because his Irano-Meds from Asia Minor turn out close to Epipaleolithic Levantines instead. Natufians are of course Mediterraneans according to almost all authorities although Angel had shoehorned them into his unsatisfactory category of Basic Whites.

    The history of Europe as a subcontinent is pretty much the story of a Mediterranean race moving up into Europe and absorbing the earlier HGs (just like the dual structure model of Japanese origins) and later mixing with the steppe peoples. This is not new. Whats new and important is the affinity of the early Iranian people and their clustering fairly close to CHG. The other data that's urgently needed to understand Europe's ancestry is from a sampling of the stone age Maghrebis.

    The paper actually suggests a possible North African origin for the Natufians and therefore the Mediterranean race. As we know its an old idea that the Capsians evolved from the earlier UP Mechtoids by a process of gracilisation and they are racially Mediterranean.

Similar Threads

  1. Genetic Structure of the Spanish Population
    By Roderic in forum Population Genetics
    Replies: 0
    Last Post: Sunday, October 17th, 2010, 11:46 PM
  2. Genetic Structure of Europeans: A View from the North–East
    By Agrippa in forum Population Genetics
    Replies: 3
    Last Post: Friday, May 8th, 2009, 11:07 PM
  3. The genetic structure of English villages (abstract)
    By Euclides in forum Population Genetics
    Replies: 0
    Last Post: Thursday, June 10th, 2004, 01:03 PM
  4. Genetic Structure of the Sardinian Population
    By Euclides in forum Population Genetics
    Replies: 0
    Last Post: Wednesday, March 31st, 2004, 04:27 PM

Bookmarks

Posting Permissions

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