Dissimilarities in Alignment-Free Methods for Phylogenetic Analysis Based on Genomes

ISSN: 2212-392X (Online)
ISSN: 1574-8936 (Print)

Volume 12, 6 Issues, 2017

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Current Bioinformatics

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Yi-Ping Phoebe Chen
Department of Computer Science and Information Technology
La Trobe University

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Dissimilarities in Alignment-Free Methods for Phylogenetic Analysis Based on Genomes

Current Bioinformatics, 9(3): 218-227.

Author(s): Xiao-Su Chen, Zu-Guo Yu and Juan Zheng.

Affiliation: School of Mathematics and Computational Science, Xiangtan University, Hunan 411105, China.


Whole genome sequences are generally accepted as excellent tools for studying evolutionary relationships. Due to the problems caused by the uncertainty in alignment, existing tools for phylogenetic analysis based on multiple alignments could not be directly applied to the whole-genome comparison and phylogenomic studies. There has been a growing interest in alignment-free methods for phylogenetic analysis using complete genome data. The “distances” used in these alignment-free methods are not proper distance metrics in the strict mathematical sense. In this study, we first review them in a more general frame — dissimilarity. Then we propose some new dissimilarities for phylogenetic analysis. Last three genome datasets are employed to evaluate these dissimilarities from a biological point of view.


Alignment-free method, dissimilarity, distance, genome, phylogenetic analysis.

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Article Details

Volume: 9
Issue Number: 3
First Page: 218
Last Page: 227
Page Count: 10
DOI: 10.2174/1574893609999140523124702
Price: $58
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