I'm not buying that South Slavs are mainly from a Dacian-Thracian stock, because in that case we'd all cluster with Albanians and Greeks, and especially insular Greeks since those were isolated from Slavic migrations.
The logical explanation for me is that the Slavic admixture pulls the Romanians North, while the Dacian/Thracian admixture pulls the South Slavs toward the South genetically and that's how the two intersect.
Now determining the actual distribution of the two components in these individuals is quite hard at the moment, because we don't have any Dacian/Thracian samples yet.
The only proxy for Slavs we've got come from the Middle Ages in Czechia. For Dacians/Thracians the possible proxy derives from the Iron Age Balkan references found in Mathieson's paper on Southeast Europe.
So, by no means is this pseudo-model ideal, but that's what we've got at the moment if you want to raise the question about the actual distribution of Dacian/Thracian (native Balkan) vs Slavic in the current people from the Balkans.
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia |
---|
1 | Balkans_IA +Slavic_Bohemia | Romanian_-_G428 | | 2.9315 | 48.33 | 51.67 |
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia--RISE569 |
---|
1 | Balkans_IA +Slavic_Bohemia--RISE569 | Bulgarian_-_BulgarianD6 | | 2.3798 | 52.5 | 47.5 |
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia |
---|
1 | Balkans_IA +Slavic_Bohemia | Serbian_-_Serbian_Serbia2 | | 2.5178 | 40.83 | 59.17 |
Check with Albanians and insular Greeks since I assume that they are a purer Balkan stock:
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia--RISE569 |
---|
1 | Balkans_IA +Slavic_Bohemia--RISE569 | Albanian_-_ALB212 | | 2.7741 | 75 | 25 |
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia--RISE569 |
---|
1 | Balkans_IA +Slavic_Bohemia--RISE569 | Greek_Crete_-_NA17376 | | 5.8175 | 99.17 | 0.83 |
Check with Ukrainians and Poles since I assume that they are a purer Slavic stock:
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia |
---|
1 | Balkans_IA +Slavic_Bohemia | Ukrainian_-_592_R01C01 | | 3.3803 | 0 | 100 |
| Model | Sample | Sample Age BCE | Fit | Balkans IA | Slavic Bohemia |
---|
1 | Balkans_IA +Slavic_Bohemia | Polish_-_Poland11 | | 3.561 | 0 | 100 |