Quote:
The differentiation of the Slovenian population from the rest of the Balkan populations is based primarily on the lower frequency of the I2a1b-M423 haplogroup. The calculated age of this specific haplogroup together with the variation peak detected in the suggested Slavic homeland could represent a signal of Slavic migration arising from medieval Slavic expansions. However, the strong genetic barrier around the area of Bosnia and Herzegovina, associated with the high frequency of the I2a1b-M423 haplogroup, could also be a consequence of a Paleolithic genetic signal of a Balkan refuge area, followed by mixing with a medieval Slavic signal from modern-day Ukraine ... Furthermore, the genetic proximity of the Slovenian, Slovakian and, to some extent, the Czech populations, whose territory was united in the early days of Slavic settlement under the Samo’s tribal union, is of particular note (Barford, 2001). The homogeneous genetic strata of these three Slavic countries could reflect a common ancestral Slavic population in the central European region, which was later divided by the settlement of German tribes in the region of modern-day Austria and was influenced (mostly in the Slovenian population) by the South Slavic genetic pool ... AMOVA revealed the highest variation between groups when the Slovenian population was grouped together with other West Slavic populations, suggesting that the West Slavic populations and the Slovenian population are more genetically similar to each other compared with the South Slavic language group, which consists of the Slavic Balkan population and Slovenian population. This finding favours a hypothesis that suggests an origin of the Slovenian language in the West Slavic language group (Bezlaj, 1967; Grafenauer, 1950; Zˇ uzˇek, 2007).
Slovenians are often forgotten from the discussion, but the fact the Slovenians have such a low frequency of I-PH908, that there's a low frequency and variation of I-PH908 among West Slavs, including Lusatian Sorbs who have 0% I-PH908, it can be hardly argued anymore that it arrived with the medieval Serbs and most probably even Croats who also lived and migrated from today's German-Czech-Polish border. People often ignore that contemporary ethnonym ≠ genetics, and as for now the overall scientific data and conclusion is this, probably it will be a hard pill to swallow for some people obsessed proving their nationalistic pride.