Not sure I am convinced by your answer LeBrok. I am not talking here about cultural ethnicity but genetic ethnicity like the ones based on autosomal dna in geno 2.0 ?
you said we can do that only if population is not well mixed. could you please be more explicit ?
For example you can do it for Polish people, but you can't for Americans, North and South, because there are too many different ethnicities recently mixed together. Most people in Americas are multiethnic on genetic level.
It is hard to do that for Italy either, even though it is very old country. Proportions of admixtures are quite different for North Italians, Sicilians and Sardinians, but they are all ethnic Italians. You would need to reduce ethnicities to local regions only. But what about people in big cities where ethnicities are mixed together. Who are they?
[TABLE="width: 986"]
[TR]
[TD]Europeans[/TD]
[TD]# of samples[/TD]
[TD]S-Indian[/TD]
[TD]Baloch[/TD]
[TD]Caucasian[/TD]
[TD]NE-Euro[/TD]
[TD]SE-Asian[/TD]
[TD]Siberian[/TD]
[TD]NE-Asian[/TD]
[TD]Papuan[/TD]
[TD]American[/TD]
[TD]Beringian[/TD]
[TD]Mediterranean[/TD]
[TD]SW-Asian[/TD]
[TD]San[/TD]
[TD]E-African[/TD]
[TD]Pygmy[/TD]
[TD]W-African[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Poland[/TD]
[TD]LeBrok[/TD]
[TD]1[/TD]
[TD]7[/TD]
[TD]10[/TD]
[TD]57[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]22[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Netherlands[/TD]
[TD]Northerner[/TD]
[TD]0[/TD]
[TD]9[/TD]
[TD]6[/TD]
[TD]55[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]29[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Italy, NE[/TD]
[TD]7[/TD]
[TD]0[/TD]
[TD]7[/TD]
[TD]20[/TD]
[TD]34[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]31[/TD]
[TD]6[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Italy, NW[/TD]
[TD]5[/TD]
[TD]0[/TD]
[TD]6[/TD]
[TD]20[/TD]
[TD]33[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]34[/TD]
[TD]6[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]99[/TD]
[/TR]
[TR]
[TD]Italy, Tuscany[/TD]
[TD]4[/TD]
[TD]0[/TD]
[TD]7[/TD]
[TD]25[/TD]
[TD]28[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]32[/TD]
[TD]8[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Italy, South[/TD]
[TD]5[/TD]
[TD]0[/TD]
[TD]8[/TD]
[TD]32[/TD]
[TD]17[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]27[/TD]
[TD]13[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Sicily[/TD]
[TD]5[/TD]
[TD]0[/TD]
[TD]9[/TD]
[TD]32[/TD]
[TD]18[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]27[/TD]
[TD]12[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Sardinia [/TD]
[TD]2[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]23[/TD]
[TD]17[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]48[/TD]
[TD]11[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Macedonia[/TD]
[TD]selectivememri[/TD]
[TD]0[/TD]
[TD]6[/TD]
[TD]25[/TD]
[TD]35[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]25[/TD]
[TD]7[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Albania[/TD]
[TD]Dibran[/TD]
[TD]0[/TD]
[TD]5[/TD]
[TD]30[/TD]
[TD]27[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]30[/TD]
[TD]8[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Greek, mainland[/TD]
[TD]3[/TD]
[TD]0[/TD]
[TD]6[/TD]
[TD]32[/TD]
[TD]25[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]26[/TD]
[TD]11[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Greek, Islands, East[/TD]
[TD]5[/TD]
[TD]0[/TD]
[TD]9[/TD]
[TD]38[/TD]
[TD]14[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]23[/TD]
[TD]14[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Cyprus[/TD]
[TD]4[/TD]
[TD]1[/TD]
[TD]10[/TD]
[TD]44[/TD]
[TD]6[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]20[/TD]
[TD]17[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[TR]
[TD]Ashkenazy[/TD]
[TD]?[/TD]
[TD]1[/TD]
[TD]5[/TD]
[TD]34[/TD]
[TD]19[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]24[/TD]
[TD]14[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]99[/TD]
[/TR]
[TR]
[TD]turk-istanbul[/TD]
[TD]?[/TD]
[TD]1[/TD]
[TD]16[/TD]
[TD]45[/TD]
[TD]11[/TD]
[TD]1[/TD]
[TD]3[/TD]
[TD]3[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]11[/TD]
[TD]9[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD="align: right"]100[/TD]
[/TR]
[/TABLE]
"Genetic ethnicity" works in some cases, also some deep clades of Y and mtDNA could be identified as prevalent in ethnic populations, but it won't let you speak ethnic language, wear ethnic clothes, observe ethnic ways.