These samples include both human DNA and DNA from environmental contaminants such as bacteria and fungi, which introduces a great deal of noise into the data. The very small number of SNPs for these samples also contributes to the noise in the data. This noise shows up in the results below as Negroid or Mongoloid admixture.
In spite of the noise, a few things can be learned. The two samples from the Thracian tumuli, T2G2 and K8, and the Bronze Age sample V2 had significant amounts of the K12b Gedrosia component. The amounts of the Gedrosia component seen in these samples are much larger than the 1.5–3.3% of the Gedrosia component seen in Bulgarians today. Note that the Gedrosia component is associated with R1b but not with R1a.
All of the samples have significantly more of the dv3 West European component than the dv3 East European component. Note that Thracians were typically described by ancient writers as having blue eyes and red hair, and that red hair is a predominantly Western European trait.
Bam in the face of all those people who claimed Caucasus_Gedrosia genes are "assimilated" natives into the genetic pool of Indo Europeans! farmers lack this but suddenly when Indo_Europeans appear (Thracians) it's huge!
Sile The problem which I mentioned long time ago, is that people associate the "West European" component with West Indo Europeans while the "East European" with the eastern Indo Europeans.
But as I said "West European" like component was likely more prevelant in ancient Indo Europeans than the "Eastern European one, beside both beeing actually very similar and having probably evolved/split allot after the Indo Europeans.
If we take a look at Indo_Aryans in India EVEN they have more of this "West European" like component than "East European". EVEN the Ukrainians have more of it!
The North European genes spred by proto Indo Europeans must have been at first more West European like. So R1a was also spred together with "West European" like genes, of course in combination to Caucasus_Gedrosia.
This makes also sense if you take into account that proto ANE was ancestral to Caucasus_Gedrosia and North European. Inside this North European component the West European is slightly closer to Caucasus_Gedrosia than East European is.
Proto_North European must have been more West European like and throughout the centuries it split into an East European and West European branch.
Kurds have slightly more West European than East European. Ukrainians have slightly more West than East European, Iranians, Balkanians and Indians the same.
Thracians were described BY ALL ancient records as red haired and blue eyed. And now allot of them have allot more Caucasus_Gedrosia than modern Balkanians. Heck the frequency even reaches numbers typical of modern West Asians!
This should be a prove that light hair and light eyes are not connected to "North European" component exclusively. Those kind of traits must have been a genetic mutation which occured earlier.