What percentage of Turks have Circassian ancestors

What percentage of today's Turks are of Bulgarian / Circassian / Greek / Serbian descent?

I am not sure if it is possible to define a percentage of the population as descendants as it is quite difficult to scientifically define a descendant of one ethnic group when you have to define that other ethnic group scientifically as well.

There are several studies of the DNA distribution of populations in many countries. One of the most serious studies on Turkey is that "Excavation of Y Chromosome Haplotype Layers in Anatolia" by Cinnioglu et al., Stanford University.

It shows the following results as the Y-DNA haplogroup distribution of the Turkish population:

E1b1b1 = 10.7% (common in the Mediterranean region)

G = 10.9% (often in the Caucasus, also in the Middle East)

I = 5.3% (common in Central Europe, the West Caucasus and the Balkans)

J1 = 9% (often in Arabia and Dagestan)

J2 = 24% (often in West Asia and Southeast Europe as well as in Central and South Asia)

K = 4.5% (common in Asia and the Caucasus)

L = 4.2% (common in India and Khorasan)

N = 3.8% (common in Eastern Europe and North Asia, including Siberia (e.g. Turkish-speaking Yakuts), the Altai mountain region and the Ural mountain region)

Q = 1.9% (common in North Asia, including the North Maltese peoples)

R1a = 6.9% (often in Central Asia, the Caucasus, Eastern Europe and among Indo-Aryans)

R1b = 14.7% (common in Western Europe)

T = 2.5% (often in the Mediterranean, South Asia and Northeast Africa)

You have to make sure that Y-DNA only shows the male and not the female ancestors - although I'm not sure how much of a difference that would make.

It is also important to note that the Y-DNA distribution in the population is given above and the population is not made up of people from any of these categories. Everyone has several of these categories as all humans carry genes from thousands of ancestors.

In many ways, Turkey has a very diverse ethnic profile that is very mixed. You can also compare the Y-DNA profiles of other countries in Europe on the map of the study below. There you can see that the profile of neighboring countries like Greece is more or less very similar.