natsuya 发表于 2010-7-8 22:02

歐亞牛隻的遺傳結構 (蒙古牛隻是東西混血群體)

Genetic diversity and structure in Bos taurus and Bos indicus populations analyzed by SNP markers.

Lin BZ, Sasazaki S, Mannen H.

Abstract

The purpose of this study was to assess genetic diversity, phylogenetic relationship and population structure among nine Eurasian cattle populations using 58 single nucleotide polymorphism (SNP) markers. The calculated distribution of minor allele frequencies and heterozygosities suggested that the genetic diversity of Bos indicus populations was lower than that of Bos taurus populations. Phylogenetic analyses revealed the main divergence between the Bos taurus and Bos indicus populations, and subsequently between Asian and European populations. By principal components analysis, the Bos taurus and Bos indicus populations were clearly distinguished with PC1 (61.1%); however, six Bos taurus populations clustered loosely and the partial separation between European and Asian groups was observed by PC2 (12.5%). The structure analysis was performed using the STRUCTURE program. Distinct separation between Bos taurus and Bos indicus was shown at K = 2, and that between European and Asian populations at K = 3. At K = 4, 5 and 6, Mongolian population showed an admixture pattern with different ancestry of Asian and European cattle. At K = 7, all Bos taurus populations showed each cluster with little proportion of admixture. In conclusion, 58 SNP markers in this study could sufficiently estimate the genetic diversity, relationship and structure for nine Eurasian cattle populations, especially by analyses of principal components and STRUCTURE.

摘要: http://www.ncbi.nlm.nih.gov/pubmed/20597883?dopt=Abstract

natsuya 发表于 2010-7-9 18:23

向各位斑竹和POLY兄求個全文!!

一统浆糊 发表于 2012-5-24 00:04

2# natsuya
俺不是版主也不是POLY能不能发个呀?

Yungsiyebu 发表于 2012-5-24 12:35

很有意思,蒙古、日、韩土牛与欧洲牛是一系,而东南亚牛属于另一个系统。

然后,欧洲牛和日韩土牛分成两个支系,而蒙古牛是二者的混合。
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