I was talking about autosomal dna, not yDna. Ydna only accounts for about 2% of your total genetic make-up.
Once again, let me use an extreme example. The herders in some areas of the Cameroons almost all carry R1b. This is what they look like...
http://realhistoryww.com/world_histo...Cameroon_1.jpg
Y dna does not tell the whole story where individuals are concerned.
The fact that Croats may carry only 25% non "Slavic" y dna doesn't mean they are 75% "Slavic", or, said, another way, that they are only 25% non-Slavic.
It doesn't work that way.
Perhaps if you read this you'll understand it better...
"There are three major types of genealogical DNA tests: Autosomal and X-DNA, Y-DNA and mtDNA.
- Autosomal tests look at chromosomes 1–22 and X. The autosomes (chromosomes 1–22) are inherited from both parents and all recent ancestors. The X-chromosome follows a special inheritance pattern. Ethnicity estimates are often included with this sort of testing.
- Y-DNA looks at the Y-chromosome, which is inherited father to son, and so can only be taken by males to explore their direct paternal line.
- mtDNA looks at the mitochondria, which is inherited from mother to child and so can be used to explore one's direct maternal line.[1]
Y-DNA and mtDNA cannot be used for ethnicity estimates, but can be used to find one's haplogroup, which is unevenly distributed geographically.[2] Direct-to-consumer DNA test companies have often labeled haplogroups by continent or ethnicity (e.g., an "African haplogroup" or a "Viking haplogroup"), but these labels may be speculative or misleading.""
https://en.wikipedia.org/wiki/Genealogical_DNA_test