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《ZOOLOGICAL RESEARCH》 1995-02
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PROTEIN POLYMORPHISM AND GENETIC DIFFERENTITION IN YUNNAN COMMON HORSE AND SHORT HORSE POPULATIONS

Su Bing; Liu Aihua; Lin Shiying; Wang Wen; Lan Hong; Shi Liming(Laboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology,the Chinese Academy of Sciences, Kunming 650223)Xie Dewen(Yunnan Institute of Domesticated Animals)  
In this paper, using protein electrophorsis, we analyzed two different populations of Yunnan horses, the Yunnan common horses(21 individuals) and the short horses(14 individuals). Of all the 44 genetic loci surveyed, 10 of them were found to be polymorphic. Therefore, as for the common horse population, the percentage of polymorphic loci(P) is 0.227, the mean heterozygosity(H) is 0.089 and the mean number of allels(A) is 1.273. In short horse population, P=0.205, H=0.083, A=1.250. The above results indicated that both the common and short horse populations were wealthy of genetic diversity. There existed many variations of alleles in the two populations from limited areas of Yunnan Province. Futhermore, we calculated Nei's genetic distance (D) between the two populations and got a value of 0.0317, which imply a certain degree of genetic differentiation between them. According to the hypothesis of molecular clock, we speculated that the divergent event occurred about 18.5 million years ago.
【Fund】: 云南省应用基础研究重大项目基金
【CateGory Index】: S821.2
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