How reasonable is it to use a sample of the Sintasha culture?

[sipovka]

The percentage of Germans flows in different models

Target: Sipovka_scaledMH
Distance: 2.0588% / 0.02058755
40.6 Russia_Sunghir_Medieval.SG
25.6 Lithuania_Marvele_Roman.SG
20.4 RUS_Sintashta_MLBA
13.4 Netherlands_Groningen_Saxon_Medieval


Target: Sipovka_scaledMH
Distance: 2.3858% / 0.02385767
50.0 Russia_Sunghir_Medieval.SG
26.0 Netherlands_Groningen_Saxon_Medieval
24.0 Lithuania_Marvele_Roman.SG

Opinions are divided on this issue, some say that the sample of Sintasha culture should only be used by Asians, while others believe that all Eastern Europeans have a percentage of Sintasha culture

 

[qh777]

When I use Sintashta in place of earlier Yamnaya steppe populations when making lists that measure Steppe/ Anatolian Farmer/ WHG admix, I get a better fit.

The reason for this I suspect is because the Sintashta population has some Corded Ware admixture. The Corded Ware people themselves seem to be roughly 75% Steppe/Yamnaya and 25% Early European farmer.

 

[sipovka]

When I use Sintashta in place of earlier Yamnaya steppe populations when making lists that measure Steppe/ Anatolian Farmer/ WHG admix, I get a better fit.

View attachment 16953
View attachment 16954

The reason for this I suspect is because the Sintashta population has some Corded Ware admixture. The Corded Ware people themselves seem to be roughly 75% Steppe/Yamnaya and 25% Early European farmer.

Well, but why g25 does not detect Sintashians among more or less pure germans, but the percentage is overestimated if they are mixed with the balto-slavs?

as I understand it, I get Sintashta, because Sintashta and Balto-Slavs have a common ancestor
And the percentage of Germans is decreasing because genetically sintashta on PCA drifts towards germanics because they had some increment in early European farmer dna which you can see in germanics too

am I right?

Target: German_Hamburg
Distance: 0.9614% / 0.00961402
71.6 Netherlands_Groningen_Saxon_Medieval
27.2 Russia_Sunghir_Medieval.SG
1.2 RUS_Sintashta_MLBA

 

[sipovka]

this man has a german grandfather, the rest of his ancestors are Russian, and he was also overcharged Steppe_MLBA

 

[qh777]

One thought would be that one shouldn't mix medieval and bronze age samples together. Sintashta is a more base layer ancestry that the 2 medieval populations would also have. Among North/North East/North West Europeans you are going to see genetic overlap. Results may vary based on the samples used. Basically I'm not sure. I only have guesses. Perhaps others on the forum could provide more information.

G25 is PCA based and can blur populations due to shared common ancestry from earlier populatons.

 

[sipovka]

According to the Bronze Age calculator, steppe_MLBA is still overestimated for me