【摘要】 <正> 近20年来,古DNA研究技术和方法已迅猛发展,目前从古人类残骸中获取DNA序列,进而讨论人类的演化、亲缘关系和迁移成为分子人类学的一个重要方向。现在,古DNA分析的策略就是扩增特异保守性较强的片段并进行序列测定,然后跟已有的相应序列资料进行比较、分析,并综合材料所在的环境特点和材料本身的形态特征等,进行一些合理的推断。人类线粒体DNA的无重组性和母性单倍体遗传的特更多还原

【Abstract】 Six fragments of 364-bp nucleotide sequence in hypervariable region Ⅰ (HVRI) of mito- chondrial DNA are successfully extracted from 6 individuals of an ancient population buried in the Guoxianyaozi cemetery of Inner Mongolia dated back to the Dongzhou Period in China.A phylogenetic tree and a two-dimensional MDS plot are constructed using mtDNA sequences from the ancient population and several modern Asian populations.The results of these analyses show the ancient population shares a closer genetic relationship with North Asian populations than with East and Central Asian populations.Another Principal Component plot are construc- ted using mtDNA sequences from the ancient population and several other ancient Chinese pop- ulations.Research on the populations from the different space-time in the Great Wall belt is im- portant and far-reaching for the probing into population migrations and gene flow as well as communications and replace of culture between populations.更多还原