[交流] 【求助/交流】如何读懂进化树 已有16人参与

本人最近做了一个进化树，请大家参谋一下具体是什么意思。这方面本人刚接触。 一般认为都是Neighbor-joining analysis分析作的树。但本人用MEGA做的，用到这样的参数 No. of Taxa : 9 Data File : C:\Documents and Settings\607\My Documents\新建文件夹\2.meg Data Title : d Data Type : Nucleotide Analysis : Phylogeny reconstruction Tree Inference : ============================== ->Method : UPGMA ->Phylogeny Test and options : Bootstrap (1000 replicates; seed=18180) Include Sites : ============================== ->Gaps/Missing Data : Complete Deletion Substitution Model : ============================== ->Model : Nucleotide: Maximum Composite Likelihood ->Substitutions to Include : d: Transitions + Transversions ->Pattern among Lineages : Same (Homogeneous) ->Rates among sites : Uniform rates No. of Sites : 1370 No Of Bootstrap Reps = 1000 主要问题是本人对这种参数做出来的图（应该是Nucleotide: Maximum Composite Likelihood方法吧）和Neighbor-joining analysis分析作的树有何区别不太理解，是否可以一样分析进化关系呢？特别是最下面的那条刻度线是什么意思？请高手指教了！谢谢！ [ Last edited by 111602 on 2010-8-18 at 11:38 ]

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