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在似近分析和 Nei氏遗传距离的基础上 ,给出了 DNA似近距离计算公式 ,并以 DNA似近距离估算类群间的分歧时间 (进化时间 ) ,应用 1 0种限制内切酶对猕猴属 ( genusMacaca)内 5个种 mt DNA的切点数据计算了这 5个种的 DNA似近距离和进化时间 .比较由DNA似近距、遗传距离构建的歧化树和 Fooden及 Delson的形态歧化树表明 ,除遗传距离的歧化树外 ,其它三种歧化树都有一个共同点 ,就是熊猴 ( M.assamensis)与藏酋猴 ( M.thibetna)歧化最晚 .以 DNA似近距离估算猕猴属内这 5个种最早分歧时间与 Delson推算的时间比较吻合 .在贵州的汉族、苗族、布依族和水族 mt DNA酶切点数据中 ,用 DNA似近距离方法构建的歧化树与历史记载的情况相符合
Based on the near-similarity analysis and the Nei’s genetic distance, the DNA-like proximity equation is given and the DNA divergence time (evolutionary time) Five species of mtDNA from genusMacaca were used to calculate the DNA proximity and evolutionary time.Compared with the divergence tree constructed by DNA proximity and genetic distance and the morphological disparity tree of Fooden and Delson The results showed that all three kinds of disproportionation trees had one common denominator except the disparity tree with genetic distance, that is, the most disproportionation of M.assamensis and M.thibetna.The genetic distance between Macaca The earliest divergence time of these five species is in good agreement with the time estimated by Delson.In the case of the mt DNA cleavage data of Han, Miao, Buyi and Shui nationalities in Guizhou Province, the disparity tree constructed by DNA-like proximity and the historical records Match