Because so many Turkishpeople today claim to be a descendant of Oghuz Khan male members of the Amucalar descendants of Gndz Gazi the older brother of Osman I tested their YDNA Genetic history of the Turkish people shows that the common ancestor Erturul belonged to haplogroup Ra  Typical of Central Asian Caucasus Eastern Europeans and IndoAryan people  httpwwwysearchorgsearchviewaspuidXWBWWviewuidFTEMFp