Tuesday, October 27, 2020

We have discussed here many times that based on genetics the most important ( since Neolithic ) migrational event into Armenia occured at MBA (circa 2400-2200bc).

We have discussed here many times that based on genetics the most important ( since Neolithic ) migrational event into Armenia occured at MBA (circa 2400-2200bc). The supposedly source of migration is the Catacomb culture in the North then via Daghestan.

According to this paper they introduced also brand new horse haplotypes in South Caucasus and Anatolia.


PS Horses were present in Armenia before MBA but they had fewer haplotypes. https://www.science.org/doi/10.1126/sciadv.abb0030

We have another J2b2a L283 from a Bronze Age site Mokrin in North Serbia.

 We have another J2b2a L283 from a Bronze Age site Mokrin in North Serbia. It is dated at 2000-1800 bc ( Maros culture ) . It was found alongside of three R1b-Z2103 -s and I2a-s. It has some 40 percent of Steppe ancestry like others from the same site. 

The other J2b L283 was found in Croatia MLBA. Also with a lot off Steppe ancestry. Other younger cases were found in Italy some in Sardinia without Steppe. Those are published in different papers.


So why this is an important finding? The reason is that the L283 do not give impression to be a classic Neolithic or even post Neolithic lineage that moved from Anatolia to Europe were it is prevalent today. In the current stage of our knowledge it looks like it was a South Caucasian lineage that crossed the Caucasus and moved to Balkanes via Steppe in Bronze Age. Indeed the two other cases of L283 are found in ancient Armenia and in MBA Kabardino Balkaria (North Caucasus).

Here the modern data were You can see an Armenian on the root of branch.


https://www.yfull.com/tree/J-L283/


Here the pre print.


https://www.biorxiv.org/content/10.1101/2020.05.18.101337v1

Late Chalcolithic 4500-3600 BC in Armenia and around.

 Late Chalcolithic 4500-3600 BC in Armenia and around.

Chaff faced ware period. Also known as Leyla tepe in South Caucasus. 

Possible origins somewhere in the southern part of historic Armenia close to North Mesopotamia.


Remarkable features. Jar burials. Rectangular houses. Textile. Use of wool. Pot wheel. Advanced metal knowledge. Wine making 


Haplogroups L1a1 in Areni. G1 in SE Azerbaijan. 

Played an important role in the genesis of Maykop. Other haplotypes from Maykop of possible CFW origin. L2, T1a3, J2b2a-L283 ( prominent in Europe today) .

Other possible haplotypes E-V22, E-M84 ( found in Arslantepe LC) from N Mesopotamia , R1b V1636. CFW was present in Arslantepe also but I don't have access to supplements to know what was those Arslantepe samples archaeologic context.

One unsolved puzzle of CFW is the presence of Kurganic burials. Origins of those Kurganic burials are disputed. Some commentators link them with IE people. 

CFW was replaced by Kur Araxians who came from Northern parts of historic Armenia.


PS Notice not all arrows represent migrations.


The history of J2-L25

J2-L25 is the second most frequent type of J2 in Armenia (~5%). It is found in Central Asia, from Iran to Europe, in North Africa and Mesopotamia. It is rare in Caucasus. The age of L25 is 9100 year old. It seems all modern L25 descend from one Neolithic farmer who lived in northwestern Iran, southeastern parts of historic Armenia and in north Mesopotamia. The oldest L25 we have is from Tepe Hissar (5500 year ago) in north Iran. L25 was prominent among Iran related farmers but was completely absent among Anatolian and Levantine related farmers.
L25 has three important subclades. Let's see their histories.

  • PF4888, L243 A low frequence branch found in Near East and Europe. One ancient sample was found from Roman era Boghazkoy in Anatolia.
  • F3133 This is the biggest subclade of L25. It migrated to east from NW Iran. It was found in ancient South Central Asia. In Bronze Age BMAC culture. It was also found in east Iran, Jiroft culture. In most likelihood it was present in Harappa also but still no direct prove of that. F3133 has good presence in Iraq. Based on that it was suggested that it can be a Sumerian marker, but still no hard evidence of that. After the arrival of Steppe people in Central Asia (Andronovo) the Proto Iranian community formed as a mixture of Andronovo and BMAC which resulted in the integration of some F3133 in Proto Iranian community. Indeed few cases of F3133 were found among ancient Scythians, Saka and Turkic samples. But most of Armenian cases of F3133 do not belong to this Scythian branch and their presence in Armenia is almost certainly old.
  • Z438, Z387, L70 This branch has a very unique history. It is mostly European and eastern Mediterranean. This is not the result of farmer's migration. Rather a Late Bronze Age migration from Anatolia to Italy and subsequent expansion with Roman Empire. How Z438 appeared in Anatolia is not clear yet. It could have migrated from North Iraq/South Armenian Highland to Anatolia in Late Chalcolithic. The age of L70 subclade is 3800 but the star cluster starts at 3400 years ago which can be linked with Late Bronze Age collapse in Near East and migrations of various Sea People. A paper from ancient Rome has found a signal of migration from Anatolia (ancient Armenian samples were used as proxy) in Iron Age during the Early Republican era. But L70 was not present in few ancient DNA published in this paper, while some L70 were present in Imperial Rome period. Despite a migration to Italy the story of L70 almost certainly is not related to the origins of Etruscans. In Lazaridis 2022 significant number of L70 and samples from parallel branches were found from Anatolia.  The Y17949 parallel to L70 is unrelated to Sea People story.

The idea that Armenians could have serious influx from Levant is not new.

 The idea that Armenians could have serious influx from Levant is not new. It was discussed many times the last 5 - 7 years that I follow all this debates. But the last paper from Skourtationi was a game changer. It demonstrated that the reason why Armenian are shifted toward East Med is not an massive influx from Levant but because Eastern Turkey in ancient times was inhabited by quite southern populations. The same finding inflated the level of Steppe in Armenia bringing it to more realistic numbers.


Here is the opinion of the user DMXX on this subject. He is the admin of Iranian DNA project.


PS. I must add that the presence of Semitic Y dna in Armenia is undeniable ( J1 -Z1884, some J2b1-s, some T-s ) Neverthless their number, their fragmented nature do not speak about any one time mass migration.  


========

In sum, Armenians can be reliably modeled as ~85% E. Anatolian-S. Caucasian ChL-EBA and ~11% EMBA steppe. 

.....

So, I'd tentatively assert that Armenians are ~11% EMBA/~16% MLBA steppe, which is only a couple %age points less than the Kurmanji Kurdish (non-Yazidi) and Azeri averages, and is a touch higher than the average seen in Iranian Lurs. 


The above also corroborates Arame's modelling - Significant differences in the source of Anatolia/Levant_N-rich admix is seen between Armenians and Assyrians. The majority of that admix in Armenians is typified by the SE Turkish EBA datapoint, whereas it's an even split in Assyrians. Levant_EBA in this context is a catch-all indicator for Semitic-related admix in Assyrians.


The overall difference in component scores here is 30% - This is substantially larger than what was inferred via ADMIXTURE many years ago (as highlighted by Alkaevli's post, the % difference was ~13%). 

Ergo, with informal modelling that contains aDNA and not modern pop-modal allele frequency data, Armenians and Assyrians should no longer be considered "variants" of one another. It's analogous to claiming that Brits and Spaniards are "the same". 

....


Either way, in conclusion:

1) Armenians and Assyrians should not be considered synonymous with one another,

2) Armenians do not have "low" (defined arbitrarily by me as <5%) EMBA steppe admix relative to neighbouring pops (they're within range for W. Asia),

3) There's reason to suspect that some of our Assyrian samples in G25 carry cryptic admixture from relatively steppe-rich neighbouring pops, skewing the averages


https://anthrogenica.com/showthread.php?20497-split-Armenians-Origins-amp-Steppe-Admix&p=673078&viewfull=1#post673078


This is one of several examples of where, as a community, the collective perception of a given topic is unduly coloured by formative experiences with the preliminary and/or rudimentary data that were available to us in the 2005-2015 period. 


I've been a spectator (or active interlocutor) to these discussions for most of that period, so forgive me for this unsourced narration regarding why there is resistance to the notion that Armenians don't have a significant (>10%) proportion of P-C steppe-mediated admixture. 


The earliest uniparental studies (I have Weale et al. 2001 in mind) on the Armenians showed what we'd expect in a fairly opaque sense (they broadly clustered with other W. Asians). Later papers demonstrated that Armenians, on the Y-line, were typified by the "quintessentially W. Asian" combination of E1b1b1, G(1+2), J2a, J1(xe in peri-2010 ISOGG nomenclature) and R1b-L23, which was also observed in all populations from central Anatolia through to Iran and south towards Iraq. Later data, such as from Peter Hrechdakian's FTDNA Armenian DNA Project, broadly supported that observation.


By the early 10's, auDNA results from multiple Armenian and Assyrian individuals from the consumer testing circuit began popping up on forums. A similarity between them was readily observed. Further, the uniparental profiles were also broadly similar (per above). Folks began to assume a near-complete convergence in origins based on these factors, which were reinforced by anthropological considerations (e.g. irregular intermarriage between these two minority groups, partially facilitated by their Christian backgrounds). 


The inference that the two populations were almost synonymous with one another from a genetic perspective was seemingly cemented by 2012-14, when ADMIXTURE calculators reined supreme, and the two populations certainly did appear closer with respect to the scores they'd generated. Here, we observed what Alkaevli's table perfectly demonstrates - Armenians generally appeared midway on a pan-component cline between Georgians and Assyrians, with most component scores tending towards the Assyrian end of that axis. Their "N. European" related ADMIXTURE proportions were also significantly below what was observed in groups like non-Trabzon Turks or Iranians across practically all calculators.


Although this general line of argument (an iteration of "Assyrians/Armenians are language-shifted Armenians/Assyrians" or "Assyrians and Armenians are 90+% Urarto-Hurrian-derived and that's it") seemed convincing at the time, one piece of evidence (which was curiously ignored by most, with the notable exception of former colleague and esteemed contributor 'Humanist') impeded me from accepting these hypotheses. Specifically, the surprisingly lacklustre IBD segment sharing between Assyrians and Armenians, which falls quite short of what we can observe from other known related groups in the region (f.ex. numerous Iranian ethnicities and populations that are now described as Kurdish). 


In the sciences, especially when a multi-disciplinarian perspective is employed, it is crucial to validate hypotheses, control for bias and critically appraise discordant data if one of your evidence streams doesn't align with the rest. This appraisal wasn't generally taken up by the community at large, where a seeming majority seemed to implicitly accept earlier conventions without re-appraising old data in the face of new, or back-testing old ideas with new material. 


In retrospect, there were always two problems with the general popular argument up to circa 2014:

1) Despite the high degree of uniparental profile overlap between W. Asian populations, there are significant differences in frequency. Additionally, there are significant differences in the types of subclades seen beyond the stereotypical W. Asian combination (f.ex. Armenians were, from memory, an unusual local hotbed for Y-DNA I2; Iranians and Kurds are broadly the most Y-DNA R1a-M17 containing para-ethnic groups; Y-DNA Q frequencies in the Republic of Azerbaijan and W. Iran, etc.). Discounting these differences in favour of a fixation on the commonality undercuts the very point of establishing contrasts between groups (I personally suspect that some observers were/are so preoccupied by the ADMIXTURE outputs of old that they instinctively looked for the common rather than the differences when it came to the Armenians)

2) ADMIXTURE's design (modal component formation based on allele frequency) makes ancestral signals "bleed into each other" in regions with a longstanding history of demographic settlement or mixing. Ergo, Armenians being 3-6% "N. European" on average in Dodecad K12b doesn't indicate much about the actual degree of admixture from a N. European-like population (in this case, MLBA steppe groups, or EMBA to a lesser degree). 


https://anthrogenica.com/showthread.php?20497-split-Armenians-Origins-amp-Steppe-Admix&p=672080&viewfull=1#post672080

With currently available data we can say that from Neolithic to Late Chalcholithic modern Armenia was inhabited by Armenian like people shifted to East Med

 With currently available data we can say that from Neolithic to Late Chalcholithic modern Armenia was inhabited by Armenian like people shifted to East Med. In LC period the shift toward East Med became even more stronger. You can see LC period sample from Azerbaijan ploting close to Arslantepe LC samples. On the other hand we have Armenia Chl ( marked as LCaucasus_C) which is shifted toward North East ( to left and top) This is because it has some Steppe Piedmont type ancestry which should not be confused with Yamna. If we remove that shift they will also plot close to other LC samples from Turkey and Azerbaijan. This Areni was exceptional and we should not imagine it as a widespread type of ancestry in historic Armenia. They had trade contacts with North.

Then in EBA (after 3600bc) with Kur Araxian culture we had a serious shift toward CHG. While modern Armenians are in intermediate position between EBA and LC. The most top red circle of Arslantepe LC is the place of modern Armenians. ( It is the ART018 sample)


 How this became possible?


The answer to this question can be found in Kur Araxian samples from Arslantepe. Here how they look.


Target: TUR_Arslantepe_EBA (Kur Arax)

Distance: 1.2158% / 0.01215811

92.2 TUR_Arslantepe_LC

7.8 Kura-Araxes_ARM_Kaps


This means that those CHG shifted KurAraxians had quite little genetic impact on southern and western parts of Arm. Highland were mostly the preceding LC type simply borrowed the KA culture without having much genetic ancestry from this people. 


PS. The shift toward CHG do not mean that KA people came from Caucasus. In most likelihood they are from Kars Artahan Javakhk region were isolated highlanders were living. KurAraxian from Kaps (Shirak) is the best proxy for this proto Kur Araxians. From linguistic point of view this also means that KA was a multiethnic place.

Few comments on the discussions in the previous thread.

Few comments on the discussions in the previous thread.

+ 2D PCA from Academic papers gives only very approximate picture of population relatedness. G25 on the other hand creates coordinates in 25 (!!!) dimension which is much detailed information. Pops that looks close on 2D can be very different in G25. One such a case are the Imeretian Georgians and Armenians.

+ When comparing ancient samples to modern one must be very cautious in interpreting data. One must also take into consideration archaeological context. Inferring linguistics from such a comparison is even more speculative. I just propose to compare Yamna to modern ones, You will start to think that they were Udmurts. Or compare Sintashta to modern ones You will understand why many Indians hate the idea that Sintasht Andronovo are Indo Iranian. Neverthless this is becoming mainstream in Western Academy. 

+ Here are two tools for making Your own PCA's using G25 sheets.

https://vahaduo.github.io/g25views/#NorthEurope
. .

Custom PCA

https://vahaduo.github.io/custompca/

Linguistics is something that can't be easily ignored. Let's not forget that current mainstream in West is that Armenian and Greek are related. Clackson expressed a different opinion but he's opinion is not widely accepted. The only reason why Andronovo is believed to be an Indo Iranian culture is the linguistics, because a lot off other data are going against that idea.