Identifiability of evolutionary tree models has been a recent topic of discussion and some models have been shown to be non-identifiable. A coalescent-based rooted population tree model, originally proposed by Nielsen et al. 1998 [2], has been used by many authors in the last few years and is a simple tool to accurately model the changes in allele frequencies in the tree. However, the identifia...

The "star paradox" in phylogenetics is the tendency for a particular resolved tree to be sometimes strongly supported even when the data is generated by an unresolved ("star") tree. There have been contrary claims as to whether this phenomenon persists when very long sequences are considered. This note settles one aspect of this debate by proving mathematically that the chance that a resolved t...

2 Kelchner, S.A. and Thomas, M.A. (2007) Model use in phylogenetics: nine key questions. Trends Ecol. Evol. 22, 87–94 3 Posada, D. and Crandall, K. (1998) Model test: testing the model of DNA substitution. Bioinformatics 14, 817–818 4 Goldman, N. (1993) Statistical tests of models of DNA substitution. J. Mol. Evol. 36, 182–198 5 Bollback, J.P. (2002) Bayesian model adequacy and choice in phylog...

the genus fritillaria comprises of 165 taxa of medicinal, ornamental and horticultural importance. evolutionary relationships in this genus is an interesting research area, attracting many researchers. in this study, phylogenetic relationships among 18 native to endemic species in iran belonging to four subgenera petilium, theresia, rhinopetalum and fritillaria, are assessed using chloroplast t...

NO abstract this article: Phylogenetic Analysis of Human Astrovirus Infection among Children Suffering from Gastroenteritis Referred to Aboozar Hospital, Ahvaz, Iran

four saudi arabian indigenous sheep populations including najdi, hbsi, arb, and naemi were genotyped for 16 microsatellite markers recommended by the food and agriculture organization (fao). this study aims to provide information on the genetic structure of the breeds analyzed and give indications and proposals for the cross breeding program. all loci were polymorphic in all populations and loc...

aspergillus fumigatus is a saprophyte fungus, widely spread in a variety of ecologicalniches and the most prevalent aspergilli responsible for human and animal invasiveaspergillosis. the first step to develop novel and efficient therapies is the identificationand understanding of the key tolerance and virulence factors of pathogens. the mainfocus of the present study is to perform the similarit...