== Non sense == 

 THe 2 sentences  

 "And the third conclusion is that modern-day Croats may not have that much genetically in common with the Croats of the proto-Slavic origin. The R1a haplogroup that is usually at 40-60% levels in most Eastern European countries is at 35% within the Croat population." 

 Croats have 35% R1a, compared to a range of 40-60% in other slavic countries. I do not think this is a very significant difference. Whilst it IS lower, how does the writer of this article jump to the conclusion that they don;t have much genetic commonality.  

 A better conclusion is that Croats have are a more mixed race compared to Poles, eg, although still genetically Slavic, and certainly culturally.