Inicio  /  Information  /  Vol: 6 Par: 4 (2015)  /  Artículo
ARTÍCULO
TITULO

Information and Phylogenetic Systematic Analysis

Walter Craig and Jonathon Stone    

Resumen

Information in phylogenetic systematic analysis has been conceptualized, defined, quantified, and used differently by different authors. In this paper, we start with the Shannon Uncertainty Measure information measure I, applying it to cladograms containing only consistent character states. We formulate a general expression for I, utilizing a standard format for taxon-character matrices, and investigate the effect that adding data to an existing taxon-character matrix has on I. We show that I may increase when character vectors that encode autapomorphic or synapomorphic character states are added. However, as added character vectors accumulate, I tends to a limit, which generally is less than the maximum I. We show computationally and analytically that limc?8 I = log2 t, in which t enumerates taxa and c enumerates characters. For any particular t, upper and lower bounds in I exist. We use our observations to suggest several interpretations about the relationship between information and phylogenetic systematic analysis that have eluded previous, precise recognition.

 Artículos similares

       
 
Vincenzo Zammuto, Maria Teresa Caccamo, Salvatore Magazù, Antonio Spanò, Salvatore Guglielmino and Concetta Gugliandolo    
Spores from Bacillus horneckiae SBP3 (SBP3) of shallow hydrothermal vent origin have recently been reported to survive extreme conditions more often than their close phylogenetic relatives B. horneckiae DSM 23495T (BHO) and B. subtilis 168 (BSU) used in ... ver más
Revista: Applied Sciences

 
?eljko Mihaljevic, ?eljko Pavlinec, Ivana Giovanna Zupicic, Dra?en Oraic, Aleksandar Popijac, Osvin Pecar, Ivan Sr?en, Miroslav Benic, Boris Habrun and Snje?ana Zrncic    
Noble pen shells (Pinna nobilis) along the Eastern Adriatic coast were affected by mass mortalities similarly to the populations across the Mediterranean basin. Samples of live animals and organs originating from sites on Mljet Island on the south and th... ver más

 
Justie Su-Tzu Juan, Yi-Ching Chen, Chen-Hui Lin and Shu-Chuan Chen    
The ancestral mixture model, an important model building a hierarchical tree from high dimensional binary sequences, was proposed by Chen and Lindsay in 2006. As a phylogenetic tree (or evolutionary tree), a mixture tree created from ancestral mixture mo... ver más
Revista: Algorithms

 
David Fernández-Baca and Lei Liu    
We study two problems in computational phylogenetics. The first is tree compatibility. The input is a collection ?? P of phylogenetic trees over different partially-overlapping sets of species. The goal is to find a single phylogenetic tree that display... ver más
Revista: Algorithms

 
James S. Klaus, Vassiliki H. Kourafalou, Alan M. Piggot, Ad Reniers, HeeSook Kang, Naresh Kumar, Elsayed M. Zahran, Leonidas G. Bachas, Adolfo Fernandez, Piero Gardinali, Michal Toborek, Sylvia Daunert, Sapna Deo and Helena M. Solo-Gabriele    
Within the tropical marine study site of Guánica Bay, Puerto Rico, polychlorinated biphenyls (PCBs) are subjected to coastal and oceanic currents coupled with marine microbial and geochemical processes. To evaluate these processes a hydrodynamic model wa... ver más