Haplogrupa R1a je haplogrupa rasprostranjena među istočnoeuropskim i indoiranskim narodima. Nju posjeduje 24% stanovnika Hrvatske i 12% Hrvata iz BiH.
![Thumb](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/R1A_map.jpg/640px-R1A_map.jpg)
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