MOESAN
Elite member
- Messages
- 5,987
- Reaction score
- 1,380
- Points
- 113
- Location
- Brittany
- Ethnic group
- more celtic
- Y-DNA haplogroup
- R1b - L21/S145*
- mtDNA haplogroup
- H3c
@Daniel
I'll be long:
You mention:
Two other populations fit as 2-way mixtures in Table S3.5: Neolithic Anatolians fit as ~86% Dzudzuana and ~14% Natufians. This does not disprove that Neolithic Anatolians are approximately a clade with Dzudzuana, since Natufians trace ~86-89% of their ancestry to Dzudzuana (Tables S3.2, 5), and thus Neolithic Anatolians trace >98% of their ancestry from Dzudzuana, also in agreement with the 2-way models of Table S3.2. This does not mean that there was gene flow from the Levant into western Anatolia, as the (unsampled) hunter-gatherer precursors of Neolithic Anatolians may not have been identical to Dzudzuana.
Me :
I wrote to quickly and confused myself, sorry for my hurrying; I did not remember the « Dzudzuana » was considered so high among Natufians, I believed the BE ‘s part was very higher in these last ones. In the graph the direct Dzudzupart is 73 % but yes the total ‘dzudzulike’ part is about 87/88 %. I was wrong, and Natufians were rather poorer in BE than Dzudzuana, what disproves some of my bets.
Concerning flow between Neolithic Anatolians and Levant, a study about AHG and their successors in Néolithic Anatolia estimates an introgression of AHG or AAF to form Levant Farmers (I suppose = PPNB). It does not speak of a flow in the opposite direction at these dates but mentions this South → North flow into ACF (Anatolian Ceramic Farmers).
You :
The paper I quoted had EEF at 66% Natufian and I believe the rest from the Caucasus but I find your take on EEF being half Natufian and half WHG interesting, especially since the consensus is that EEF originated with Basal Eurasians in the Near East.
Me :
In the same answer of your, it’s «Neolithic Anatolians fit as ~86% Dzudzuana and ~14% Natufians. » - some discrepancy here !?: nevertheless EEF is very close to Neolithic Anatolian !
Concerning my « take » : we have to distinguish between « X-like » components and true X origin or introgression. I think the statement would better be « EEF (in some survey, it can vary according to others) is halfway between WHG and a pop akin to Natufian ».
You mention:
Conclusions We summarize our main conclusions from this section:“Western” Near Eastern populations, including Dzudzuana from the Caucasus, belonged to a cline of decreasing Villabruna/increasing deep ancestry (I add : BE in this ‘deep ancestry’ ?): Villabruna→Dzudzuana/Anatolia_N→PPNB→Natufian→Taforalt “Eastern” Near Eastern populations, including Caucasus hunter-gatherers (CHG) and Neolithic Iranians (Iran_N) traced most of their ancestry from populations of this cline, but also had additional Ancient North Eurasian/Eastern non-African (ANE/ENA) admixture."
You :In this case, Dzudzuana and Natufian are basically the same. If I recall, their tools look similar too.
Me :
Dzudzuana and Natufians are on the same cline, and their principal component is Dzudzuana or Dzudzuana-like, so something close to Villabruna-like + BE, but Dzudzuana is closer to WHG & Villabruna, and lack the ANA input.
I found in I. Lazaridis paper :
[To better understand the relationship of Dzudzuana to other ancient West Eurasian populations, we performed symmetry testing using f-statistics(Extended Data Fig. 5). These analyses show that ESHG share more alleles with Dzudzuana than with PGNE populations, except Neolithic Anatolians who form a clade with Dzudzuana to the exclusion of ESHG (Extended Data Fig. 5a). Thus, our results prove that the European affinity of Neolithic Anatolians does not necessarily reflect any admixture into the Near East from Europe, as an Anatolian Neolithic-like population already existed in parts of the Near East by ~26kya.]
So, Dzudzuana forms a clade with Anatolian Farmers, not with Natufians, spite it seems the principal component in natufians. The fact the Villabruna-like is old in Anatolia does not mean Villabruna iself came recently from Near-East.
some bits of biblio :
[The Villabruna cluster has been modeled s contributing to both the ~30kya Věstonice and ~20kya El Mirón-cluster populations suggesting that it must have existed somewhere in relatively unmixed form long before the oldest genetic data we have from it at ~14kya. However, it is unlikely that the Villabruna cluster sojourned in mainland Europe, as members of the cluster have been attested there only by ~14kya, marking an increased affinity of these European populations of the time to Near Eastern ones.] BTW « increased affinity » is not « quasi-identity » !
[Post-glacial Near Easterners and North Africans (PGNE) (CHG, Natufians, TaforaltIbero-Maurusians from North Africa, and early Neolithic farmers from Anatolia, Iran, the Levant and the Maghreb) are strongly differentiated from all European and Siberian hunter-gatherers (ESHG) (FST= 0.078−0.267). By contrast, Dzudzuana is genetically closer to both contemporaneous Gravettians from Europe (0.051±0.012) and also to the much later Neolithic Anatolian farmers (0.039±0.005) who are genetically closest to them according to this measure. Genetic drift inflates FSTover time, so the affinity to the Gravettians may partly be due to the great age of these samples. However, age cannot explain the affinity to much later Neolithic Anatolians of ~8kya, a population closer to Dzudzuana than any other PGNE European hunter-gatherers in our analysis form a cline with Villabruna/WHG samples on one end and ANE on the other. None of the PGNE populations other than the Neolithic Anatolians cluster with the Ice Age Caucasus population from Dzudzuana. As reported previously, present-day West Eurasians are much more homogeneous than ancient ones, reflecting extensive post-Neolithic admixture.]
Rather, ancestry deeply related to the Villabruna cluster was present not only in Gravettian and Magdalenian-era Europeans but also in the populations of the Caucasus, by ~26kya. Neolithic Anatolians, while forming a clade with Dzudzuana with respect to ESHG , share more alleles with all other PGNE suggesting that PGNE share at least partially common descent to the exclusion of the much older samples from Dzudzuana.
Western PGNE populations, including Neolithic Anatolians, pre-pottery Neolithic farmers from the Levant (PPNB), Natufians, and Taforalt, can all be modeled as a mixture of Dzudzuana and additional ‘Deep’ ancestry that may represent an even earlier split than the Basal Eurasians.]
& : just to say things are not always very simple in anDNA !
I ‘ll try to put order in my head on this matter :
Villabruna and certainly the ‘villabruna-like’ in Dzudzuana are old heritages of Common West Eurasian ;
the BE (and perhaps their ‘deep’ ancestry) present in Near-East, seems absent in ancient European HG’s, even in the Villabruna cluster, and, more interesting, almost absent later in Balkans HG’s ; this seems exclude that the most of Balkans HG’s came from Near-East. Or it would ask for a very strong drift.
Nothing proves us with certainty that this ‘villabruna-like’ ancestry in Near-East came lately from Europe into Near-East, nor the contrary.
As BE and ANA present among Natufians, are absent from European HG’s, I can exclude that some ‘natufian-like’ or even ‘dzudzuana-like’ pop colonised Europe before the Agriculture.
Let alone the supposed percentages of components in the diverse pops, varying according to surveys, we see the big global distances between European HG’s or every time and the Near-East ones, even before the perceptible CHG or Iran inputs and even if the SE Europe HG’s And Villabruna cluster are a bit less far.
To conclude, it’s uneasy to localise the Common West Eurasian part ancestral to Dzudzuana and to others, I see it around Black Sea or Caucasus, or not too far at some very ancient stage of history, a central position between West and Central-East Eurasia, close to possible glacial refuges.
I'll be long:
You mention:
Two other populations fit as 2-way mixtures in Table S3.5: Neolithic Anatolians fit as ~86% Dzudzuana and ~14% Natufians. This does not disprove that Neolithic Anatolians are approximately a clade with Dzudzuana, since Natufians trace ~86-89% of their ancestry to Dzudzuana (Tables S3.2, 5), and thus Neolithic Anatolians trace >98% of their ancestry from Dzudzuana, also in agreement with the 2-way models of Table S3.2. This does not mean that there was gene flow from the Levant into western Anatolia, as the (unsampled) hunter-gatherer precursors of Neolithic Anatolians may not have been identical to Dzudzuana.
Me :
I wrote to quickly and confused myself, sorry for my hurrying; I did not remember the « Dzudzuana » was considered so high among Natufians, I believed the BE ‘s part was very higher in these last ones. In the graph the direct Dzudzupart is 73 % but yes the total ‘dzudzulike’ part is about 87/88 %. I was wrong, and Natufians were rather poorer in BE than Dzudzuana, what disproves some of my bets.
Concerning flow between Neolithic Anatolians and Levant, a study about AHG and their successors in Néolithic Anatolia estimates an introgression of AHG or AAF to form Levant Farmers (I suppose = PPNB). It does not speak of a flow in the opposite direction at these dates but mentions this South → North flow into ACF (Anatolian Ceramic Farmers).
You :
The paper I quoted had EEF at 66% Natufian and I believe the rest from the Caucasus but I find your take on EEF being half Natufian and half WHG interesting, especially since the consensus is that EEF originated with Basal Eurasians in the Near East.
Me :
In the same answer of your, it’s «Neolithic Anatolians fit as ~86% Dzudzuana and ~14% Natufians. » - some discrepancy here !?: nevertheless EEF is very close to Neolithic Anatolian !
Concerning my « take » : we have to distinguish between « X-like » components and true X origin or introgression. I think the statement would better be « EEF (in some survey, it can vary according to others) is halfway between WHG and a pop akin to Natufian ».
You mention:
Conclusions We summarize our main conclusions from this section:“Western” Near Eastern populations, including Dzudzuana from the Caucasus, belonged to a cline of decreasing Villabruna/increasing deep ancestry (I add : BE in this ‘deep ancestry’ ?): Villabruna→Dzudzuana/Anatolia_N→PPNB→Natufian→Taforalt “Eastern” Near Eastern populations, including Caucasus hunter-gatherers (CHG) and Neolithic Iranians (Iran_N) traced most of their ancestry from populations of this cline, but also had additional Ancient North Eurasian/Eastern non-African (ANE/ENA) admixture."
You :In this case, Dzudzuana and Natufian are basically the same. If I recall, their tools look similar too.
Me :
Dzudzuana and Natufians are on the same cline, and their principal component is Dzudzuana or Dzudzuana-like, so something close to Villabruna-like + BE, but Dzudzuana is closer to WHG & Villabruna, and lack the ANA input.
I found in I. Lazaridis paper :
[To better understand the relationship of Dzudzuana to other ancient West Eurasian populations, we performed symmetry testing using f-statistics(Extended Data Fig. 5). These analyses show that ESHG share more alleles with Dzudzuana than with PGNE populations, except Neolithic Anatolians who form a clade with Dzudzuana to the exclusion of ESHG (Extended Data Fig. 5a). Thus, our results prove that the European affinity of Neolithic Anatolians does not necessarily reflect any admixture into the Near East from Europe, as an Anatolian Neolithic-like population already existed in parts of the Near East by ~26kya.]
So, Dzudzuana forms a clade with Anatolian Farmers, not with Natufians, spite it seems the principal component in natufians. The fact the Villabruna-like is old in Anatolia does not mean Villabruna iself came recently from Near-East.
some bits of biblio :
[The Villabruna cluster has been modeled s contributing to both the ~30kya Věstonice and ~20kya El Mirón-cluster populations suggesting that it must have existed somewhere in relatively unmixed form long before the oldest genetic data we have from it at ~14kya. However, it is unlikely that the Villabruna cluster sojourned in mainland Europe, as members of the cluster have been attested there only by ~14kya, marking an increased affinity of these European populations of the time to Near Eastern ones.] BTW « increased affinity » is not « quasi-identity » !
[Post-glacial Near Easterners and North Africans (PGNE) (CHG, Natufians, TaforaltIbero-Maurusians from North Africa, and early Neolithic farmers from Anatolia, Iran, the Levant and the Maghreb) are strongly differentiated from all European and Siberian hunter-gatherers (ESHG) (FST= 0.078−0.267). By contrast, Dzudzuana is genetically closer to both contemporaneous Gravettians from Europe (0.051±0.012) and also to the much later Neolithic Anatolian farmers (0.039±0.005) who are genetically closest to them according to this measure. Genetic drift inflates FSTover time, so the affinity to the Gravettians may partly be due to the great age of these samples. However, age cannot explain the affinity to much later Neolithic Anatolians of ~8kya, a population closer to Dzudzuana than any other PGNE European hunter-gatherers in our analysis form a cline with Villabruna/WHG samples on one end and ANE on the other. None of the PGNE populations other than the Neolithic Anatolians cluster with the Ice Age Caucasus population from Dzudzuana. As reported previously, present-day West Eurasians are much more homogeneous than ancient ones, reflecting extensive post-Neolithic admixture.]
Rather, ancestry deeply related to the Villabruna cluster was present not only in Gravettian and Magdalenian-era Europeans but also in the populations of the Caucasus, by ~26kya. Neolithic Anatolians, while forming a clade with Dzudzuana with respect to ESHG , share more alleles with all other PGNE suggesting that PGNE share at least partially common descent to the exclusion of the much older samples from Dzudzuana.
Western PGNE populations, including Neolithic Anatolians, pre-pottery Neolithic farmers from the Levant (PPNB), Natufians, and Taforalt, can all be modeled as a mixture of Dzudzuana and additional ‘Deep’ ancestry that may represent an even earlier split than the Basal Eurasians.]
& : just to say things are not always very simple in anDNA !
I ‘ll try to put order in my head on this matter :
Villabruna and certainly the ‘villabruna-like’ in Dzudzuana are old heritages of Common West Eurasian ;
the BE (and perhaps their ‘deep’ ancestry) present in Near-East, seems absent in ancient European HG’s, even in the Villabruna cluster, and, more interesting, almost absent later in Balkans HG’s ; this seems exclude that the most of Balkans HG’s came from Near-East. Or it would ask for a very strong drift.
Nothing proves us with certainty that this ‘villabruna-like’ ancestry in Near-East came lately from Europe into Near-East, nor the contrary.
As BE and ANA present among Natufians, are absent from European HG’s, I can exclude that some ‘natufian-like’ or even ‘dzudzuana-like’ pop colonised Europe before the Agriculture.
Let alone the supposed percentages of components in the diverse pops, varying according to surveys, we see the big global distances between European HG’s or every time and the Near-East ones, even before the perceptible CHG or Iran inputs and even if the SE Europe HG’s And Villabruna cluster are a bit less far.
To conclude, it’s uneasy to localise the Common West Eurasian part ancestral to Dzudzuana and to others, I see it around Black Sea or Caucasus, or not too far at some very ancient stage of history, a central position between West and Central-East Eurasia, close to possible glacial refuges.