Hadamard Conjugation: An Analytic Tool for Phylogenetics

作者：Michael D. Hendy · 年份：2005 · DOI：10.1093/oso/9780198566106.003.0006 · 被引用次数：23 · 研究领域：Plant and animal studies、Sensory Analysis and Statistical Methods

Abstract A phylogeny (evolutionary tree) on a set of taxa X, is a tree T whose leaves are labelled by the elements of X. When we identify the root R of T; provide a distribution of nucleotides at R; and give a stich model of the nucleotide substitutions between the vertices of each edge e of T, we can calculate the probability of ea.ch possible distribution (which we will refer to as a ‘‘pattern’’) of nucleotides at the leaves. A set of aligned homologous nucleotide sequences of common length l, is then modeled as l samples drawn sequentially from this distribution, with the pattern of nucleotides at a common site representing one sample. The relative frequencies of each observed pattern provide estimates of these probabilities.