title: A simple k-word interval method for phylogenetic analysis of DNA sequences.
abstract: In this study, the normalized k-word average interval distance is proposed to extract phylogenetic information from DNA sequences. The phylogenetic trees of 30 mammalian species based on Euclidean distance measure are reconstructed with k ranging from 2 to 9. Comparison of our results with other methods shows that our method is efficient and powerful for phylogenetic analysis. In addition, for a fixed k, 4(k) distinct k-words are divided into n classes based on a new proposed indicator, where n is the number of DNA sequences. The effect of each k-word class on phylogeny is discussed.
authors.affiliation: School of Mathematical Sciences, Dalian University of Technology, Dalian, Liaoning 116024, PR China. sunnyday1979@163.com
authors.forename: Shuyan
authors.initials: S
authors.lastname: Ding
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Xiwu
authors.initials: X
authors.lastname: Yang
authors.forename: Tianming
authors.initials: T
authors.lastname: Wang
mesh_terms: D000818:Animals; D001483:Base Sequence; D054629:Genome, Mitochondrial / Q000235:genetics; D008322:Mammals / Q000235:genetics*; D010802:Phylogeny; D017422:Sequence Analysis, DNA / Q000379:methods*