Testing character correlation using pairwise comparisons on a phylogeny
Testing character correlation using pairwise comparisons on a phylogeny
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DOI：
10.1006/jtbi.1999.1050
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发表时间：
2000-02-07
影响因子：
2
通讯作者：
Maddison, WP
中科院分区：
文献类型：
--
作者：
Maddison, WP
在比较生物学中，物种或基因（末端类群）的成对比较被用来检测性状的关联。例如，如果对在特定性状的状态上形成对比的物种对进行检查，则具有特定状态的物种对中的成员可能比其他成员更有可能在第二性状中表现出特定状态。选择配对是为了在遗传学上分开，也就是说，一对成员之间的路径，沿着树的分支，沿着，不接触任何其他配对的路径。在给定的系统发育树上，必须仔细选择配对，以达到最大可能的配对数量，同时保持系统发育分离。许多替代的配对集合可以具有该最大数量。算法的开发，找到所有的分类单元配对，最大限度地增加对的数量没有约束，或与约束，每个对的成员在一个二进制字符的对比状态，或者，他们有对比状态在两个二进制字符。这些算法选择的比较，虽然在树上遗传上是独立的，但不一定是统计上独立的。(C)北京大学出版社.
In comparative biology, pairwise comparisons of species or genes (terminal taxa) are used to detect character associations. For instance, if pairs of species contrasting in the state of a particular character are examined, the member of a pair with a particular state might be more likely than the other member to show a particular state in a second character. Pairs are chosen so as to be phylogenetically separate, that is, the path between members of a pair, along the branches of the tree, does not touch the path of any other pair. On a given phylogenetic tree, pairs must be chosen carefully to achieve the maximum possible number of pairs while maintaining phylogenetic separation. Many alternative sets of pairs may have this maximum number. Algorithms are developed that find all taxon pairings that maximize the number of pairs without constraint, or with the constraint that members of each pair have contrasting states in a binary character, or that they have contrasting states in two binary characters. The comparisons chosen by these algorithms, although phylogenetically separate on the tree, are not necessarily statistically independent. (C) 2000 Academic Press.