Genetics
Indications suggest that modern Czechs are a genetic mixture of the Slavic, Celtic, and Germanic people that have inhabited the Czech territory throughout its history.
Czechs show the characteristic R1a genes of the paternal ancestorship at 34.2%. Such large frequencies of R1a have been found in Eastern Europe among Slavs and in India.
According to a 2000 study by Semino, 35.6% of Czech and Slovak males have y-chromosome haplogroup R1b, which is very common among Celts but also quite rare among Slavs. Additionally, a high frequency of mutation of the G551D gene CFTR (cystic fibrosis transmembrane conductance regulator), causing Cystic fibrosis is found in the Czech Republic, Austria, and among the Celtic Nations: Wales, Scotland, Cornwall, Ireland and Brittany.
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