tailieunhanh - Báo cáo sinh học: "Genetic relationships among twelve Chinese indigenous goat populations based on microsatellite analysisGenetic relationships among twelve Chinese indigenous goat populations based on microsatellite analysis"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Genetic relationships among twelve Chinese indigenous goat populations based on microsatellite analysis | 729 Genet. Sel. Evol. 34 2002 729-744 INRA EDP Sciences 2002 DOI gse 2002032 Original article Genetic relationships among twelve Chinese indigenous goat populations based on microsatellite analysis Meng-Hua LIa Shu-Hong ZHAOa Ci BIANb Hai-Sheng WANGa c Hong WEId Bang LIUa Mei YUa Bin FANa Shi-Lin CHENa Meng-Jin ZHUa Shi-Jun LIa Tong-An Xiong Kui LIa a Laboratory of Molecular Biology and Animal Breeding School of Animal Husbandry and Veterinary Medicine Huazhong Agricultural University Wuhan 430070 . China b Department of Animal Science Tibet Agriculture and Animal Husbandry College Linzhi 860000 . China c Institute of Criminal Science and Technology The Public Security Bureau of Hubei Province Wuhan 430070 . China d Laboratory Animal Center Third Military Medical University Chongqin 400038 . China Received 26 October 2001 accepted 4 June 2002 Abstract- Twelve Chinese indigenous goat populations were genotyped for twenty-six microsatellite markers recommended by the EU Sheep and Goat Biodiversity Project. A total of 452 goats were tested. Seventeen of the 26 microsatellite markers used in this analysis had four or more alleles. The mean expected heterozygosity and the mean observed heterozygosity for the population varied from to and to respectively. The mean ST demonstrated that about of the total genetic variation was due to the genetic differentiation within each population. A phylogenetic tree based on the Nei 1978 standard genetic distance displayed a remarkable degree of consistency with their different geographical origins and their presumed migration throughout China. The correspondence analysis did not only distinguish population groups but also confirmed the above results classifying the important populations contributing to diversity. Additionally some specific alleles were shown to be important in the construction of the population structure. The study analyzed the recent origins of these populations