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Neolithic Brits/Irish share most drift with Iberian EEF and came from the cardial route this is nothing new and has been known for several years now.
Modern ones don’t have any unique genetic relationship so the Atlantic facade theory is not true.
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Where in the West?The British hunter-gatherers were almost completely replaced by the Neolithic farmers, apart from one group in western Scotland, where the Neolithic inhabitants had elevated local ancestry. This could have come down to the farmer groups simply having greater numbers.
Was in Kilmartin Glen last summer which has tons upon tons of Neolithic remains and have been to Lewis which is another hotspot for Neolithic Remains. Those two cover the Southern and Northern Highland, and Islands near the coast.
When you get inland in the Highlands there are parts of the Caledonian Forest that remain from the Mesoloithic Era, surrounding the lochs and rocky hills. Not practical as a farmer and can see why pockets could have existed.
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https://sci-hub.tw/https://www.natur...559-019-0871-9
full paper:
Higher WHG in west scotland and SE england among neolithics is not news. (Brace et al 2018 also claimed as such https://www.biorxiv.org/content/10.1101/267443v1)
Reichs paper:
Suggesting multiple neolithic waves of migration rather than meerly a western entry point and diffusion from there.South-East England and Scotland show considerably higher
WHG admixture proportions. These proportions remain stable
from the Early into the Middle/Late Neolithic. To infer levels of
WHG introgression occurring between Iberian Early Neolithic
populations and early British farmers, we estimated admixture
proportions using qpAdm24. We detected little excess (~10%)
WHG ancestry beyond that already present in Iberian Early
Neolithic individuals, supporting little or no additional admixture with British hunter-gatherers, particularly in Wales and
South-West and Central England (Figs. 3, 4b and Supplementary
Table 4). This result appears to be slightly at odds with the f4
results presented in Supplementary Fig. 7, which indicate that
some British Neolithic samples share genetic affinities with
Cheddar Man over Loschbour, although it is difficult to say in
these cases whether this is due to genuine substantial admixture
with British WHGs or with other WHGs in northern Europe.
We regressed individual WHG ancestry proportions in British
Neolithic farmers (shown in Supplementary Fig. 8) against latitude and longitude and found a notably positive south-west to
north-east cline (Supplementary Fig. 15).
To further explore WHG introgression in Britain we applied
ALDER27 to pairs of Early Neolithic regional samples to estimate the
timing of WHG/ANF admixture events (Supplementary Table 3).
Only Early Neolithic farmers from western Scotland show evidence
of WHG introgression within ten generations. Two individuals
from Raschoille Cave had estimated introgression events occurring
4.0±3.4 generations before they lived, which is sufficiently recent
in their past that it probably occurred in Britain. The elevated levels
of WHG ancestry we see in Neolithic samples from South-East
England are older, and therefore probably a result of farmer–forager
interactions in mainland Europe
south east england may have had more danubian farmer or iberian/danubian mixed farmers, who had introgressed more with mesolithics around central europe. What happened to the british HG's?The
affinities we find between Neolithic individuals from the British
Isles and modern individuals from France are consistent with populations sharing ancestry with Neolithic groups in Iberia moving into
northern France via the Atlantic seaboard and/or southern France,
mixing to a limited degree with Neolithic populations from Central
Europe before travelling across the English Channel1,2,30.
One explanation for the British Neolithic cline in WHG ancestry is that a single population moved across Britain from a western
entry point and progressively admixed with local hunter-gatherers.
This scenario is consistent with the western distribution of megalithic cultures along the Atlantic seaboard31, and is supported by
radiocarbon evidence suggesting a marginally earlier date for
the arrival of ANF ancestry in the west of Britain1
. However, the
lack of evidence for substantive WHG introgression into British
Neolithic populations—outside of western Scotland—favours this
cline, reflecting multiple source populations with variable proportions of WHG admixture having entered different parts of Britain.
Neolithic England was the only British Isles region to have notable central euro farmer.
To test for a potential second ANF ancestry stream from Central
Europe, we explicitly modelled WHG and Early Neolithic populations in qpGraph (see Supplementary Fig. 23 and Supplementary
Table 10). The results suggest that the limited Central European
Neolithic admixture we find in British Neolithic populations is
regionally structured, with populations from England showing the
highest levels of admixture followed by those from Scotland. We
infer no Central European admixture in Neolithic farmers from
Wales. However, we caution that the model fits are poor and so
these inferences should be considered preliminary.
Last edited by Bellbeaking; 04-25-2019 at 05:21 PM.
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Does anyone know if there any of the British neolithic samples on Gedmatch at all? Thanks
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Britain was inhabited and depopulated several times. We know that Western Hunter-gatherers were the majority of Megalith builders, Cheddarman could have been a stow away from Greenland (Thought to be from C hence the darker skin). Cheddarman doesn't even come close to the first inhabitant, we know that I2 came to the Isles from Doggerland and only a tiny population made it through the tsunamis and all the other crazy stuff that led to it being the ocean it is today. The hunter-gathers entombed their important dead mostly and most the remains found are in Megalithic Orkney tombs when it comes to Britain (trace back to I2 ). Because there was no genetic diversity, very very few inhabitants; urvivors I2 bottlenecked in Britian making them almost extinct several times (some lines have even gone extinct in modern times. A lot of scientist believe that when other populations came, they spread diseases and dwindled out a lot of the already thin hunter gatherers. When the Aryans, Meds etc came to Europe it helped the population bounce back most likely adding fresh dna to the pool and adding much needed women. For the most part I is more common than its female counterparts, likely due to women being less likely to survive births, diseases that Middle Eastern populations brought etc. The native European MTDNA haplogroups mostly exist where I is found, but in Western Europe it is much rarer due to the conditions I said before.
The Eastern I and U5 women probably developed anti-bodies to diseases much earlier than the Northern Europeans as they had contact with the Middle Easterners long before and were most likely the Patient Zero's for spreading the diseases that thinned some of the other populations.
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they have too dark skin, they would've been olive colored, like spaniards or greeks. The dark skin is political propaganda saying that dark skinned people were the first in Britain, in reality, the first people in britain were darker then the modern people of the region, but no where near sub-saharan levels, they would've all died of scurvy if that were the case
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