Ancient genomes reveal structural shifts after the arrival of Steppe-related ancestry

Do you know whether the individuals were 25-30% "Steppe MLBA" or proper Yamanya?

From what I understand Yamnaya had 50% CHG, 10-18% EAF, the rest EHG/WHG.
However by the time they reached central Europe the component of the Yamnaya related peoples was only 50%, so divide the above % by half, then add half of whatever population they mixed with. As the Yamnaya related peoples admixed gradually while pushing into mainland Europe.

However I have read just one paper on this and I am not sure.
Since Yamnaya spanned vast geography and long timeline not all Yamnaya had the same autosomal composition over time/space.


Here is an article:
https://indo-european.eu/2019/08/yamnaya-ancestry-mapping-the-proto-indo-european-expansions/
 
From Duarte's post.

RegioX_FTDNA,6.85,0,0.83,0,37.94,27.68,0,0,5.67,0,21.03,0
Distance to:RegioX_FTDNA
10.55943180utigBRC002
11.61943630BRC003
13.01100304GCP002A1
14.60857967utigGCP003A1
15.23161843utigBRC007_019
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20.67592320utigBRC024
27.49543598utigGCP004A1
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32.02572560GLR001A1
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46.93520960utigBRC011
54.33471910utigBRC012
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RegioX_23andMe,6.89,0,0.86,0,37.85,27.39,0,0,5.54,0,21.47,0
Distance to:RegioX_23andMe
10.66177284utigBRC002
11.76717893BRC003
13.42295050GCP002A1
14.80792355utigGCP003A1
15.31236755utigBRC007_019
15.49915804utigBRC010_018
20.97709227utigBRC024
27.79167501utigGCP004A1
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31.95605889GLR001A1
35.80246360utigBRC013
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46.89294510utigBRC011
54.46126789utigBRC012
68.11551072utigLSC007A1
69.65747340utigLSC012A1

Father_23andMe,7.92,0,0.69,0,36.48,28.19,0.26,0,6.36,0,20.09,0
Distance to:Father_23andMe
12.27197213utigBRC002
13.19274801BRC003
13.61130780GCP002A1
15.56982659utigGCP003A1
16.42168993utigBRC007_019
17.04365571utigBRC010_018
21.79029830utigBRC024
26.11138641utigGCP004A1
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33.39140907GLR001A1
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46.85616502utigBRC011
54.00169997utigBRC012
69.33298854utigLSC007A1
70.91794061utigLSC012A1

Mother_23andMe,5.03,0.21,1.33,0,37.33,29.53,0,0,5.60,0,20.98,0
Distance to:Mother_23andMe
10.69267506utigBRC002
12.01265999BRC003
12.51695250GCP002A1
15.91214316utigGCP003A1
16.13873601utigBRC010_018
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20.41019598utigBRC024
28.85521270utigGCP004A1
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33.35257112GLR001A1
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38.06296625LSC002_004
38.98227674utigGLR002A1
42.84352693utigGLR003B1
47.89051889utigBRC011
55.11995283utigBRC012
69.14175367utigLSC007A1
70.67551273utigLSC012A1

Uncle_FTDNA,3.90,0,1.62,0.10,35.16,31.01,0.03,0,4.81,0,23.37,0
Distance to:Uncle_FTDNA
13.22406897utigBRC002
14.95177916BRC003
15.37922625GCP002A1
18.73293624utigBRC010_018
19.48846839utigGCP003A1
19.72623634utigBRC007_019
22.86338558utigBRC024
31.80405006utigGCP004A1
33.13425116utigLSC011A1
36.08033398GLR001A1
39.30937802utigBRC013
39.89664648utigBRC022
40.24971925LSC002_004
41.38307867utigGLR002A1
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49.53715272utigBRC011
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73.74883863utigLSC012A1

In-law_23andMe,5.74,0,0,0,34.02,30.41,0,0,5.61,0,24.22,0
Distance to:In-law_23andMe
14.80139183utigBRC002
16.46201385BRC003
17.20760878GCP002A1
20.09579309utigBRC010_018
20.32262778utigGCP003A1
20.51627159utigBRC007_019
24.66196667utigBRC024
31.24868957utigGCP004A1
33.99297574utigLSC011A1
36.81644605GLR001A1
39.81161891utigBRC013
40.39855938utigBRC022
40.74330252LSC002_004
42.23276690utigGLR002A1
46.34869685utigGLR003B1
48.85543061utigBRC011
57.29652607utigBRC012
73.38034205utigLSC007A1
74.89538170utigLSC012A1
 
Real Expert, there are 46 samples from Bronze Age Italy, including the mainland, Sicily and Sardinia. Of those 46 samples, 4 are blond or dark blonde and blue eyed and they're all from Sardinia. None from the mainland, and none from Sicily.

That, to me, doesn't equal blonde hair and blue eyes were not uncommon in Italy during the Bronze Age.

If you want to interpret it that way, that's your prerogative, although I think it gives the wrong impression.

In the Iron Age, to complete the story, we have one blue eyed blonde.

We have more blue eyed dark haired people. We still do. It's really a "not uncommon" phenotype in Italy. I can't put my hands on the paper right now, but a very large percentage of Italians, especially in the north, carry one blue eyed gene. Even the percentage of people with actual "light eyes" is significant.


I took my time to carefully look at the very detailed and extended table from this current study. Actually, it was a Chal_Northern/Central Italian sample with blue eyes and brown hair who was predicted to be “very pale to intermediate“, and not a BA Sardinian. However, one medieval Sardinian sample had most likely red hair, brown eyes, a very "pale to intermediate complexion". Besides, there was also 1 Neo_ Sicilian sample with blond/dark blond hair. Anyway, what I find really surprising was the result of the Neolithic Jordanians/Levantines from Lazaridis paper. 2 of the 4 samples had blue eyes. One blue-eyed individual was predicted to be blond with "pale to intermediate" skin color while the other blue-eyed one had intermediate color and dark brown/black hair. The other 2 Neo Jordanians had dark brown hair, brown eyes, and intermediate skin color. So, none of the Neolithic Levantines/Jordanians scored “dark“ or “dark to black“ category which means that they were lighter than some BA Jordanians, but also lighter than some of the Neo/CA/BA Italians from this study, and even lighter than some of the Imperial Romans. By the way 1 of the 5 CA Armenians was blond with intermediate skin, and 2 of the 23 Neo Anatolians were blond/dark blond, one had blue the other brown eyes, both samples were intermediate in complexion. Another blue-eyed ANF was dark blond/brown-haired.


Some CA Iran, BA Armenians, Anatolian farmers, Yamanya, CA Central Italians/Sicilians/Sardinians, Imperial Romans were in the “dark to black“ category. 2 of 28 Medieval/ Early modern Central Italian samples were in the Mixed Dark to Black/Intermediate category, etc.(2 Medieval/Early modern central Italians were redheads and very pale, and 1 redhaired was very pale to intermediate, 6 were blond/dark blond, with 1 of them who scored pale to intermediate, the rest were intermediate). 1 of 24 Late Antiquity Central Italians was predicted as "dark to black to pale" (strange) and 3 ones were in the "intermediate/dark to black" category. 3 of Late Antiquity samples were predicted red-haired/intermediate, and 1 blond and 6 dark blond, they were intermediate and 1 brunette scored "very pale" . Given the context, I came to the conclusion that the “dark to black“ prediction can‘t be taken literally. In terms of pairing, the blond-haired individuals no matter whether in Italy, Anatolia, Levant or Armenia basically had always blue eyes. Hence, it appears that blond hair comes typically with blue eyes.

 
I took my time to carefully look at the very detailed and extended table from this current study. Actually, it was a Chal_Northern/Central Italian sample with blue eyes and brown hair who was predicted to be “very pale to intermediate“, and not a BA Sardinian. However, one medieval Sardinian sample had most likely red hair, brown eyes, a very "pale to intermediate complexion". Besides, there was also 1 Neo_ Sicilian sample with blond/dark blond hair. Anyway, what I find really surprising was the result of the Neolithic Jordanians/Levantines from Lazaridis paper. 2 of the 4 samples had blue eyes. One blue-eyed individual was predicted to be blond with "pale to intermediate" skin color while the other blue-eyed one had intermediate color and dark brown/black hair. The other 2 Neo Jordanians had dark brown hair, brown eyes, and intermediate skin color. So, none of the Neolithic Levantines/Jordanians scored “dark“ or “dark to black“ category which means that they were lighter than some BA Jordanians, but also lighter than some of the Neo/CA/BA Italians from this study, and even lighter than some of the Imperial Romans. By the way 1 of the 5 CA Armenians was blond with intermediate skin, and 2 of the 23 Neo Anatolians were blond/dark blond, one had blue the other brown eyes, both samples were intermediate in complexion. Another blue-eyed ANF was dark blond/brown-haired.


Some CA Iran, BA Armenians, Anatolian farmers, Yamanya, CA Central Italians/Sicilians/Sardinians, Imperial Romans were in the “dark to black“ category. 2 of 28 Medieval/ Early modern Central Italian samples were in the Mixed Dark to Black/Intermediate category, etc.(2 Medieval/Early modern central Italians were redheads and very pale, and 1 redhaired was very pale to intermediate, 6 were blond/dark blond, with 1 of them who scored pale to intermediate, the rest were intermediate). 1 of 24 Late Antiquity Central Italians was predicted as "dark to black to pale" (strange) and 3 ones were in the "intermediate/dark to black" category. 3 of Late Antiquity samples were predicted red-haired/intermediate, and 1 blond and 6 dark blond, they were intermediate and 1 brunette scored "very pale" . Given the context, I came to the conclusion that the “dark to black“ prediction can‘t be taken literally. In terms of pairing, the blond-haired individuals no matter whether in Italy, Anatolia, Levant or Armenia basically had always blue eyes. Hence, it appears that blond hair comes typically with blue eyes.


Tell that to the Irish. :)
 
^^Of course not.


You can find the percentages for blue eyes by country at the link below. At 57% the Irish are far more blue eyed than the people of Germany and Belgium, as just one example.

https://www.worldatlas.com/articles/countries-with-the-most-blue-eyed-people.html

Yet, only 38% of the Irish have blonde hair.

Percentage of blonde hair in Europe.jpg

I'm sure you can see the disconnect. I think it's fair to say that the most common Irish phenotype is brown hair and blue eyes, and as someone who has spent the majority of my life around Irish people, I can say that quite often the hair is very dark brown.

At the same time, they have the fairest skin in Europe, with most people of Irish descent never really tanning, just burning, while Northeast Europeans and Scandinavians do.

Blue eyes were present in dark haired and relatively dark skinned WHG. Somewhere in far northeastern Europe the blonde hair gene seems to have arisen to a very high frequency. That's where there are the most people with blonde hair and blue eyes, but it needn't and often isn't the case in other parts of Europe.

This isn't to say, of course, that the blondest countries don't usually have very high percentages of blue eyes, because they do, but those countries are precisely in the area where the people who possessed those alleles admixed, not necessarily because the two sets of alleles are linked genetically and pass as a unit, because it's clear they don't.

Even very fair skin doesn't pass linked with light eyes and hair. I'm a perfect example. I have extremely dark hair and eyes and extremely fair skin; it's a combination more often seen in the British Isles, but, well, not always.

I believe if you look back at the data for the first Bell Beakers who arrived in Britain, brown hair and brown eyes appear, and brown hair and blue eyes, with blonde hair and blue eyes being the least common. I also think it's interesting that the blonde hair/blue eye combination is more common in the area settled by the Danes and where the Anglo-Saxon ancestry is the most frequent, not in the rest of England. Indeed, the southwest and the border areas are darker altogether, which is why I always thought the people of Appalachia, where they settled, were noticeably different in ***mentation from the people in, say, New England, settled by people from eastern England.
 
^^Of course not.


You can find the percentages for blue eyes by country at the link below. At 57% the Irish are far more blue eyed than the people of Germany and Belgium, as just one example.

https://www.worldatlas.com/articles/countries-with-the-most-blue-eyed-people.html

Yet, only 38% of the Irish have blonde hair.

View attachment 12735

I'm sure you can see the disconnect. I think it's fair to say that the most common Irish phenotype is brown hair and blue eyes, and as someone who has spent the majority of my life around Irish people, I can say that quite often the hair is very dark brown.

At the same time, they have the fairest skin in Europe, with most people of Irish descent never really tanning, just burning, while Northeast Europeans and Scandinavians do.

Blue eyes were present in dark haired and relatively dark skinned WHG. Somewhere in far northeastern Europe the blonde hair gene seems to have arisen to a very high frequency. That's where there are the most people with blonde hair and blue eyes, but it needn't and often isn't the case in other parts of Europe.

This isn't to say, of course, that the blondest countries don't usually have very high percentages of blue eyes, because they do, but those countries are precisely in the area where the people who possessed those alleles admixed, not necessarily because the two sets of alleles are linked genetically and pass as a unit, because it's clear they don't.

Even very fair skin doesn't pass linked with light eyes and hair. I'm a perfect example. I have extremely dark hair and eyes and extremely fair skin; it's a combination more often seen in the British Isles, but, well, not always.

I believe if you look back at the data for the first Bell Beakers who arrived in Britain, brown hair and brown eyes appear, and brown hair and blue eyes, with blonde hair and blue eyes being the least common. I also think it's interesting that the blonde hair/blue eye combination is more common in the area settled by the Danes and where the Anglo-Saxon ancestry is the most frequent, not in the rest of England. Indeed, the southwest and the border areas are darker altogether, which is why I always thought the people of Appalachia, where they settled, were noticeably different in ***mentation from the people in, say, New England, settled by people from eastern England.


Thanks for your explaining. To me, it was intriguing that all the blonds from the several studies from all across Italy, Anatolia, Armenia, the Levant had all blue eyes (aside from 1 Anatolian outlier). So, these results give you the impression that blond hair goes typically together with blue eyes. In Germany, for instance, naturally blond folks rarely have brown eyes, and if they‘re do, they usually have one parent with dark hair and eyes. Plus, I recall reading statics that suggested that 65% of Germans have blue/grey eyes, which means the frequency of blue/grey is a bit higher among Germans than among Irish people. Anyway, during my several visits to Italy I saw people with ocean blue eyes and nearly black hair. Looks great. Hence, I'm aware of the fact that blue eyes don‘t come with blond hair only. Brown eyes among Redheads, for example, isn't uncommon. Oh, by the way, I calculated that around 32% of Medieval/Early Modern Central Italians and 41% of the Antiquity samples from Central Italy had light coloured hair (red+blond/dark blond). Pretty much significant I would say. The Northern African admixed Etruscan female from the Roman study was intermediate while the sample 850, Latin “outlier“, was in the "dark" category. And the few Imperial samples that were predicted to be intermediate with blond/red hair and blue eyes had all an Eastern Mediterranean profile. Overall, my personal impression is that the phenotype prediction (at least in some cases and in terms of skin color) is shacky and must be taken with a grain of salt.
 
Thanks for your explaining. To me, it was intriguing that all the blonds from the several studies from all across Italy, Anatolia, Armenia, the Levant had all blue eyes (aside from 1 Anatolian outlier). So, these results give you the impression that blond hair goes typically together with blue eyes. In Germany, for instance, naturally blond folks rarely have brown eyes, and if they‘re do, they usually have one parent with dark hair and eyes. Plus, I recall reading statics that suggested that 65% of Germans have blue/grey eyes, which means the frequency of blue/grey is a bit higher among Germans than among Irish people. Anyway, during my several visits to Italy I saw people with ocean blue eyes and nearly black hair. Looks great. Hence, I'm aware of the fact that blue eyes don‘t come with blond hair only. Brown eyes among Redheads, for example, isn't uncommon. Oh, by the way, I calculated that around 32% of Medieval/Early Modern Central Italians and 41% of the Antiquity samples from Central Italy had light coloured hair (red+blond/dark blond). Pretty much significant I would say. The Northern African admixed Etruscan female from the Roman study was intermediate while the sample 850, Latin “outlier“, was in the "dark" category. And the few Imperial samples that were predicted to be intermediate with blond/red hair and blue eyes had all an Eastern Mediterranean profile. Overall, my personal impression is that the phenotype prediction (at least in some cases and in terms of skin color) is shacky and must be taken with a grain of salt.

Rome was a center for traders and visitors from all parts of Europe and the Near East not only during the Imperium but in Late Antiquity and the early Middle Ages as well. It's a big mistake to assume the samples are all locals.

It was, after all, the major pilgrimage site in Europe. Delegations to the Pope were also extremely numerous. As I've mentioned before, in 990 A.D. Sigeric, the Archbishop of Canterbury, passed right in front of the house where I was born on his way to see the Pope in order to be consecrated and then returned the same way, using the famous Via Francigena or "French Road".

Indeed, when the Roman samples from those periods were analyzed autosomally it was clear that some of the samples from Late Antiquity and the early Middle Ages were northerners visiting the city.

As Geary did with the Langobard cemeteries, the samples should have been analyzed with isotopes, which would have made their status clear to everyone and not something we had to figure out for ourselves.

Italians have not changed since the early Middle Ages, especially in Rome and the more northern areas, and those percentages are too high.

That said, blue eyed people do exist, and in quite high percentages in some parts of the country. In the Veneto, for example, more than 40% of the people have light eyes. In my father's area in the northern Apennines, in some villages, including his, everyone is light eyed. (Of course in the mountains drift plays a big role.) In the more northern parts of Liguria the same is true, almost always paired with dark hair, but not always.

Miss Liguria:
8066856507_f8eb44a9f6_z.jpg


Indeed, I recall a study from years ago that a very large percentage of Italians are heterogeneous for light eyes. Of course, that doesn't "show".

This is, I think, the combination to which you referred, and that is quite common in Ireland and Scotland.

f502504e69237414663228c33745d63a.jpg


Percentage of light eyed people in Italy:
europe-eyes-general--lig.png


Percentage of blonde haired people in Italy:
XYanv3Z.png


This is the best map ever made since it is based on a study done at the end of the 19th century before the vast migration from south to north, and they used tens of thousands of army conscripts.

Aosta and Trentino (Bolzano on the map) have many non-Italians so the data from those two areas is of limited usefulness.

Anyway, again, you can see the disconnect in percentages between light eyes and light hair.
 
Rome was a center for traders and visitors from all parts of Europe and the Near East not only during the Imperium but in Late Antiquity and the early Middle Ages as well. It's a big mistake to assume they're all locals.

Indeed, when the samples were analyzed autosomally it was clear that some of the samples from Late Antiquity and the early Middle Ages were northerners visiting the city.

As Geary did with the Langobard cemeteries, the samples should have been analyzed with isotopes, which would have made their status clear to everyone and not something we have to figure out for ourselves.

Italians have not changed since the early Middle Ages, especially in Rome and the more northern areas, and those percentages are too high.

That said, blue eyed people do exist, and in quite high percentages in some parts of the country. In the Veneto, for example, more than 40% of the people have light eyes. In my father's area in the northern Apennines, in some villages, including his, everyone is light eyed. (Of course in the mountains drift plays a big role.) In the more northern parts of Liguria the same is true, almost always paired with dark hair, but not always.

Miss Liguria:
8066856507_f8eb44a9f6_z.jpg


Indeed, I recall a study from years ago that a very large percentage of Italians are heterogeneous for light eyes. Of course, that doesn't "show".

This is, I think, the combination to which you referred, and that is quite common in Ireland and Scotland.

f502504e69237414663228c33745d63a.jpg


Percentage of light eyed people in Italy:
europe-eyes-general--lig.png


Percentage of blonde haired people in Italy:
XYanv3Z.png


This is the best map ever made since it is based on a study done at the end of the 19th century before the vast migration from south to north, and they used tens of thousands of army conscripts.

Aosta and Trentino have many non-Italians so the data from those two areas is of limited usefulness.

Anyway, again, you can see the disconnect in percentages between light eyes and light hair.


Thanks again for the info.
 
@Angela,

I read in an article, that the Mishnaic era Jews were described as being boxwood in complexion by the Rabbis of that time.


Would you call this skin color olive,intermediate or dark?


2df49580bcc028cdd8dd007d8dd200ef.jpg
 
at first sight it's a piece of wood; for colour, I would not say it's "olive" or "dark"; as an average I would say a light white "skin" with strong vascularisation! Your question is a bit funny: some joke on the cost of someone? Surely I missed something.
 
This map of light eyes in Europe is very very optimist concerning "light" eyes (for me, middle and dark green are not light, only intermediary, but here, even by taking these hues for light, the map is wrong all the way; too high %'s). M.O.
 
I add they putin the same category very regions with very different %'s.
 
at first sight it's a piece of wood; for colour, I would not say it's "olive" or "dark"; as an average I would say a light white "skin" with strong vascularisation! Your question is a bit funny: some joke on the cost of someone? Surely I missed something.




I actually wasn‘t joking, since the posted photo of this "piece of wood" is boxwood. Here is the quote I was referring to: It's from a Mishnic Rabbi, R. Ishmael, who said “The sons of Israel are like boxwood, neither black nor white but between the two”. This Rabbi took Germanic people as the example for whiteness/white skin, and Ethiopians as an example for blackness/black skin. I was told that "dark" in the eyes of a Northern European isn't necessarily dark for someone from Southern Europe.
 
I actually wasn‘t joking, since the posted photo of this "piece of wood" is boxwood. Here is the quote I was referring to: It's from a Mishnic Rabbi, R. Ishmael, who said “The sons of Israel are like boxwood, neither black nor white but between the two”. This Rabbi took Germanic people as the example for whiteness/white skin, and Ethiopians as an example for blackness/black skin. I was told that "dark" in the eyes of a Northern European isn't necessarily dark for someone from Southern Europe.

OK. boxwood ("buis" for us) seems to me a bit yellowisher than the colour I saw on your picture. Maybe it match for white "dark" skin (without sun tanning, so on protected parts of body), spite not so olivelike at the detail level.
It's true that Europeans are focused on whitish skins and split hairs when speaking about this matter.
Concerning Ethiopians, the most of them have brown skins (middle for me) what is not true dark skins.
I think the most of Near-Eastern people in ancient times had olive white skins, what is not amazing; only someones lighter or darker. The more brownish white skins or true brown skins came later I think from southerners with very often a drop of SSA "blood" (genes in fact).
A very interesting test would be to compare the skin of Arabic lands Jews to their Muslim brothers. We know their auDNA shows very less SSA input. All this for people interested in the matter, of course (for the fun, it's true I heard a new version of "Snow White" could be made with a metisse character Rachel Zegler, just for the buzz (?); in fact she seems light enough for skin and is not a true 'metisse', rather a 1/4-3/4 crossing or something like that! ATW, nobody ever wrote Snow White was a pure 'europoid', obly she was lily white skinned!?!)
 
Genetics[edit]

A genetic study published in Nature Communications in February 2020 examined the remains of 17 individuals identified with Nuragic civilization. The samples of Y-DNA extracted belonged to haplogroup I2a1b1 (2 samples), R1b1b2a, G2a2b2b1a1, R1b1b (4 samples), J2b2a1 (3 samples) and G2a2b2b1a1a, while the samples of mtDNA extracted belonged to various types of haplogroup T, V, H, J, K and U.[70] The study found strong evidence of genetic continuity between Nuragic civilization and earlier Neolithic inhabitants of Sardinia, who were genetically similar to Neolithic peoples of Iberia and southern France.[71] They were determined to be of about 80% Early European Farmer (EEF) ancestry and 20% Western Hunter-Gatherer (WHG) ancestry.[72] They were predicted to be largely descended from peoples of the Neolithic Cardial Ware culture, which spread throughout the western Mediterranean in Southern Europe c. 5500 BC.[73] The Nuragic people were strongly differentiated from other Bronze Age peoples of Europe by the near absence of steppe-related ancestry.[71]



source:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7039977/



KingJohn do you know if the Nuragics had any Iran_N or CHG?
 
Apparently Sardinia in Late Copper Age received immigrants from Iberia and Southern France and later from North Italy / Tuscany who brought Beaker materials... In the Early Bronze Age further contacts with the coasts of Tuscany brought Polada cultural elements like undecorated pottery with axe handles.

So it's likely that J2b L283 came during that period. However in the Nuragic AUTOSOMAL DNA there isn't steppe admixture so the contribution was minimal

Inviato dal mio POT-LX1T utilizzando Tapatalk

^Could you please check the question above regarding CHG or Iran_Neo in the Nuragics I made KingJohn. Was there any such ancestral component there?
I figured maybe you may know.
 
^Could you please check the question above regarding CHG or Iran_Neo in the Nuragics I made KingJohn. Was there any such ancestral component there?
I figured maybe you may know.
One individual from Bronze Age shown Steppe or Iran_Neo admixture. BA10554 if I remember correctly

Inviato dal mio POT-LX1T utilizzando Tapatalk
 
KingJohn do you know if the Nuragics had any Iran_N or CHG?


look like they were a mixture of mainly antolian neolithic + whg
so the answere is no



from the paper


https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7039977/




Table 1

Results from fitting models of admixture with qpAdm for Middle Neolithic to Nuragic period.

Proxy source populationsAdmixture fractionsStandard error
Targetabcp-valueabcabc
ASar-MNWHGAnatolia-N0.3760.1770.8230.0140.014
Sar-ECAWHGAnatolia-N0.2680.1610.8390.0200.020
Sar-EMBAWHGAnatolia-N0.0490.1610.8390.0070.007
Sar-NurWHGAnatolia-N0.1340.1630.8370.0090.009
BSar-MNWHGAnatolia-NSteppe0.2650.1770.8230.0000.0160.0230.026
Sar-ECAWHGAnatolia-NSteppe0.180.1640.8360.0000.0230.0320.036
Sar-EMBAWHGAnatolia-NSteppe0.0320.1620.8380.0000.0090.0120.013
Sar-NurWHGAnatolia-NSteppe0.0890.1630.8370.0000.0100.0140.016
CFrance-NWHGAnatolia-NSteppe0.0930.2130.7870.0000.0180.0230.027
Iberia-ENWHGAnatolia-NSteppe0.2430.0870.9130.0000.0120.0170.019
Iberia-LCAWHGAnatolia-NSteppe0.0450.2510.7490.0000.0120.0150.018
Iberia-BAWHGAnatolia-NSteppe6.0 × 10−30.2390.6890.0720.0100.0140.016
CE-ENWHGAnatolia-NSteppe0.6560.0460.9540.0000.0070.0100.012
CE-LBAWHGAnatolia-NSteppe0.1050.1280.4030.4680.0080.0110.013

(A) Two-way models of admixture for ancient Sardinia using Western Hunter-Gatherer (WHG) and Neolithic Anatolia (Anatolia-N) individuals as proxy sources. (B) Three-way models of admixture for ancient Sardinia using Western Hunter-Gatherer (WHG), Neolithic Anatolia (Anatolia-N), and Early Middle Bronze Age Steppe (Steppe-EMBA, abbreviated Steppe in table) individuals as proxy sources. (C) Three-way models for select comparison populations on the European mainland. Full results are reported in Supp. Info. 4.




Continuity from the Middle Neolithic through the Nuragic

We found several lines of evidence supporting genetic continuity from the Sardinian Middle Neolithic into Bronze Age and Nuragic times. Importantly, we observed low genetic differentiation between ancient Sardinian individuals from various time periods (FST = 0.0055 ± 0.0014 between Middle/Late Neolithic and late Bronze Age, Fig. 3). Furthermore, we did not observe temporal substructure within the ancient Sardinian individuals in the top two PCs—they form a coherent cluster (Fig. 2). In stark contrast, ancient individuals from mainland regions such as central Europe show large movements over the first two PCs from the Neolithic to the Bronze Age, and also have higher pairwise differentiation (e.g., FST = 0.0200 ± 0.0004 between Neolithic and Bronze Age individuals from central Europe, Supp. Fig. 11). A qpAdm analysis cannot reject a model of Middle/Late Neolithic Sardinian individuals being a direct predecessor of Nuragic Sardinian individuals (p = 0.15, Supp. Table 2, also see results for f4 statistics, Supp. Data 2). Our qpAdm analysis further shows that the WHG ancestry proportion, in a model of admixture with Neolithic Anatolia, remains stable at 17 ± 2% through the Nuragic period (Table 1A). When using a three-way admixture model, we do not detect significant Steppe ancestry in any ancient Sardinian group from the Middle/Late Neolithic to the Nuragic, as is inferred, for example, in later Bronze Age Iberians (Table 1B, Supp. Fig. 13). Finally, in a five-way model with Iran Neolithic and Moroccan Neolithic samples added as sources, neither source is inferred to contribute ancestry during the Middle Neolithic to Nuragic (point estimates are statistically indistinguishable from zero, Supp. Fig. 14).
 

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