Abstract: The transferrin(Tf) polymorphism of Ew enki, Mongolian, Oroqen, Tahur, Tibetan, Man-chu, Korean, Hui, Han(Xian, Harbin), Uighur nationalities living in China was investigate?by means of ultra-thin polyacrylamide gel iso eletric focusing. The results showed that ·he·Tf*C1 gene frequencies of eleven groups were higher than 0.7: Ewenki 0.7571, Oroqen 0.7467,Uighur 0.7445, Mongolian 0.7433, Tahur 0.7417, Han(Xian) 0.7205, Manchu 0.7195, Korean0.7136, Tibetan 0.7096, Hui 0.7077, Han(Harbin) 0.7056, respectively. The Tf*C2 was the se-cond major allele in these ethnical groups. The order of . Tf*C2 allelefrequenciesroughlywas opposite to Tf*Cl. In addition, some rare phenotypes werefound, such as TfBDchi in Mongolian; TfDchiDchi in Han(Xian) and TfBCl in Manchu.

Key words: Tf; Polymorphism; IEF; Population genetics