<page_title> Czechs </page_title> <section_title> Genetics </section_title> <table> <cell> Czech R. <col_header> Population </col_header> </cell> <cell> 34.2 <col_header> R1a </col_header> <row_header> Czech R. </row_header> </cell> <cell> Luca et al. 2007 <col_header> Reference </col_header> <row_header> Czech R. </row_header> </cell> </table>
According to a 2007 study, 34.2% of Czech population belongs to R1a.