%0 Journal Article
%T 几种鳄分子系统发生的探讨 The Molecular Phylogeny of Four Crocodilians Based on the Sequence of Mitochondrial ND4 and Cyt b Gene
%A 朱伟铨
%A 王义权
%A 吴孝兵
%A 周开亚ZHU Wei-quan
%A WANG Yi-quan
%A WU Xiao-bing
%A ZHOU Kai-ya
%J 遗传
%D 2001
%I 
%X 百年来关于扬子鳄的分类学位置存在着很多争议,本文测得扬子鳄、暹罗鳄和湾鳄的mtDNAND4和Cytb基因,并从GenBank中获得密西西比鳄和海龟的ND4基因和Cytb基因相应片段.用ClustalX1.8进行对位排列,以海龟为外群构建分子进化系统树.结果显示:在鳄类动物中,扬子鳄与密西西比鳄的亲缘关系最近,两者ND4基因序列碱基差异为20.68%,而Cytb基因序列碱基差异为14.43%;但扬子鳄与密西西比与鳄的分类问题仍将有待进一步探讨。 Abstract:A portion of mitochondrial ND4 and cytochrome b gene of 3 species of erocodilian was sequenced.Additional homologous sequences of Alligator mississippinisis from GenBank were aligned together and compared with Cheloniamydas.The phylogenetic trees were reconstructed with the neighbor-joining (NJ) algorithm.Alligator sinensis ismore related to Alligator mississippinesis than others though the diversity of their mitochondrial ND4 gene reached 20.68% while Cyt b gene 14.43%.It needs further study to determine the phylogenetic relationships of Alligatorsinensis and Alligator mississi ppinisis.
%K 鳄
%K ND4基因序列
%K Cyt
%K b基因序列
%K 分子系统发生
%K Key
%K words
%K Crocodilian
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=3E23F50E071DF18E21B2F5AEE4F1FA5E&aid=D8C7FB7D65B2DFB43BD5D25A2DF56E61&yid=14E7EF987E4155E6&vid=EA389574707BDED3&iid=94C357A881DFC066&sid=8D75AD3BD0D1BCC5&eid=9E7C0CB25117E09B&journal_id=0253-9772&journal_name=遗传&referenced_num=0&reference_num=0