The distribution of branch lengths in phylogenetic trees
نویسندگان
چکیده
منابع مشابه
A scale-free method for testing the proportionality of branch lengths between two phylogenetic trees
We introduce a scale-free method for testing the proportionality of branch lengths between two phylogenetic trees that have the same topology and contain the same set of taxa. This method scales both trees to a total length of 1 and sums up the differences for each branch. Compared to previous methods, ours yields a fully symmetrical score that measures proportionality without being affected by...
متن کاملBranch lengths on birth-death trees and the expected loss of phylogenetic diversity.
Diversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared with branches deeper in the tree. Here, we analyze alternative and more realistic Yule and birth-death ...
متن کاملBranch lengths on Yule trees and the expected loss of phylogenetic diversity
— Diversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared to branches deeper in the tree. Here, we analyze alternative and more realistic Yule and birth-death ...
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Abstract: While phylogenetic trees are widely used in bioinformatics, one of the major problems is that different dendrograms may be constructed depending on several factors. Albeit numerous quantitative measures to compare two different phylogenetic trees have been proposed, visual comparison is often necessary. Displaying a pair of alternative phylogenetic trees together by finding a proper o...
متن کاملDistribution of branch lengths and phylogenetic diversity under homogeneous speciation models.
The constant rate birth-death process is a popular null model for speciation and extinction. If one removes extinct and non-sampled lineages, this process induces 'reconstructed trees' which describe the relationship between extant lineages. We derive the probability density of the length of a randomly chosen pendant edge in a reconstructed tree. For the special case of a pure-birth process wit...
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ژورنال
عنوان ژورنال: Molecular Phylogenetics and Evolution
سال: 2016
ISSN: 1055-7903
DOI: 10.1016/j.ympev.2015.08.010