[Genetic analyses on the affinities between Tuoba Xianbei and Xiongnu populations].

7 mitochondrial DNA (mtDNA) sequences from Tuoba Xianbei remains in Dong Han period were analyzed. Together with the Data of Xiongnu published, the genetic affinities between Tuoba Xianbei and Xiongnu were analyzed in genetic diversity, haplogroup status, Fst genetic distances, phylogenetic analysis and multidimentional scaling (MDS) analysis. The results indicated that the Tuoba Xianbei presented the closer affinities to the Xiongnu, which implied that there was the gene flow between Tuoba Xianbei and Xiongnu during the 2 southward migrations.