Exploració per tema "Phylogeny"
Ara es mostren els items 1-20 de 24
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A balance index for phylogenetic trees based on rooted quartets
(2019-06-17)
Article
Accés obertWe define a new balance index for rooted phylogenetic trees based on the symmetry of the evolutive history of every set of 4 leaves. This index makes sense for multifurcating trees and it can be computed in time linear in ... -
Cambios morfológicos y sus implicaciones biomecánicas en la rodilla desde el antropoide al hombre
(Sociedad Ibérica de Biomecánica y Biomateriales, 1994)
Article
Accés obert -
Evolutionary trajectories of new duplicated and putative de novo genes
(2023-05-04)
Article
Accés obertThe formation of new genes during evolution is an important motor of functional innovation, but the rate at which new genes originate and the likelihood that they persist over longer evolutionary periods are still poorly ... -
Expanding the molecular and morphological diversity of Apusomonadida, a deep-branching group of gliding bacterivorous protists
(Wiley, 2022)
Article
Accés obertAbstract Apusomonads are cosmopolitan bacterivorous biflagellate protists usually gliding on freshwater and marine sediment or wet soils. These nanoflagellates form a sister lineage to opisthokonts and may have retained ... -
Expectation Maximitzation per a arbres filogenètics|
(Universitat Politècnica de Catalunya, 2011-02)
Projecte Final de Màster Oficial
Accés obertAnàlisi exhaustiu del mètode EM aplicat a la reconstrucció filogenètica. Aplicació del mètode per a la reconstrucció de topologies sobre dades simulades sota un model K3. Aplicació i comparació amb altres mètodes de ... -
Expectation-maximization for evolutionary models
(Universitat Politècnica de Catalunya, 2023-06-29)
Treball Final de Grau
Accés obertPhylogenetics plays a crucial role in enhancing our understanding of molecular sequence evolution and is regarded as one of the most effective tools for studying the origin of contagious diseases. This thesis explores the ... -
Fungal evolution: diversity, taxonomy and phylogeny of the Fungi
(Wiley, 2019)
Article
Accés obertThe fungal kingdom comprises a hyperdiverse clade of heterotrophic eukaryotes characterized by the presence of a chitinous cell wall, the loss of phagotrophic capabilities and cell organizations that range from completely ... -
Genomic evidence for recurrent genetic admixture during the domestication of Mediterranean olive trees (Olea europaea L.)
(Springer Nature, 2020)
Article
Accés obertBackground Olive tree (Olea europaea L. subsp. europaea, Oleaceae) has been the most emblematic perennial crop for Mediterranean countries since its domestication around 6000 years ago in the Levant. Two taxonomic varieties ... -
Learning substitution parameters on phylogenetic trees
(Universitat Politècnica de Catalunya, 2023-06-29)
Treball Final de Grau
Accés obertThe evolution of molecular sequences can be modeled by a Markov process on a phylogenetic tree, a common representation of the evolutionary relationships among biological entities. Under theoretical conditions, that is, ... -
Learning substitution parameters on phylogenetic trees
(Universitat Politècnica de Catalunya, 2023-06-29)
Treball Final de Grau
Accés obertL'evolució de seqüències moleculars es pot modelitzar utilitzant un procés de Markov en un arbre filogenètic, una de les representacions més habituals de les relacions evolutives entre diferents entitats biològiques. Sota ... -
Local description of phylogenetic group-based models
(2013-12)
Report de recerca
Accés obertMotivated by phylogenetics, our aim is to obtain a system of equations that de ne a phylogenetic variety on an open set containing the biologically meaningful points. In this paper we consider phylogenetic varieties de ... -
Local equations for equivariant evolutionary models
(2017-07-31)
Article
Accés obertPhylogenetic varieties related to equivariant substitution models have been studied largely in the last years. One of the main objectives has been finding a set of generators of the ideal of these varieties, but this has ... -
Markov chain Monte Carlo for the reconstruction of lineage trees from single-cell DNA data
(Universitat Politècnica de Catalunya, 2019-07)
Treball Final de Grau
Accés obert
Realitzat a/amb: Kungliga Tekniska högskolan / Kungliga Tekniska högskolanThe purpose of this study is to infer evolutionary trees through the Markov chain Monte Carlo algorithm (MCMC) based on whole genome single-cell DNA sequencing data. By using MCMC we obtain likely tree structure samples ... -
Mathematical topics in phylogenetics
(Universitat Politècnica de Catalunya, 2017-03)
Projecte Final de Màster Oficial
Accés obert
Realitzat a/amb: Max F. Perutz Laboratories / Universität WienAn evolutionary process is frequently modeled as a sequence of the four bases A,C,G,T, each of them changing independently following a Markov process. The main goal of this project are two: first of all, we wanted to ... -
Maturases and Group II Introns in the Mitochondrial Genomes of the Deepest Jakobid Branch
(Oxford University Press, 2023)
Article
Accés obertOphirinina is a recently described suborder of jakobid protists (Excavata) with only one described species to date, Ophirina amphinema. Despite the acquisition and analysis of massive transcriptomic and mitogenomic sequence ... -
Molecular and morphological characterization of four new ancyromonad genera and proposal for an updated taxonomy of the Ancyromonadida
(Wiley, 2023)
Article
Accés obertAbstract Ancyromonads are small biflagellated protists with a bean-shaped morphology. They are cosmopolitan in marine, freshwater, and soil environments, where they attach to surfaces while feeding on bacteria. These poorly ... -
An onto-phylogenetic journey through the life history of flying squids (Cephalopoda: Ommastrephidae)
(Universitat Politècnica de Catalunya, 2018-05-03)
Tesi
Accés obertFlying squids develop all its life cycle in the water column, as planktonic paralarvae and then as nektonic subadults and adults. In this Ph. D. Thesis, light was shed over several poorly understood aspects of the ontogeny ... -
Phylogenomics identifies an ancestral burst of gene duplications predating the diversification of aphidomorpha
(Oxford University Press (OUP), 2020-03)
Article
Accés obertLarge-scale gene duplication, including whole-genome duplication (WGD), is a very common phenomenon in eukaryotic genomes. Bursts of gene duplications are considered a major source of evolutionary innovation and have been ... -
PhylomeDB V5: an expanding repository for genome-wide catalogues of annotated gene phylogenies
(Oxford University Press, 2021)
Article
Accés obertPhylomeDB is a unique knowledge base providing public access to minable and browsable catalogues of pre-computed genome-wide collections of annotated sequences, alignments and phylogenies (i.e. phylomes) of homologous ... -
SAQ: semi-algebraic quartet reconstruction
(2021-01-01)
Article
Accés obertWe present the phylogenetic quartet reconstruction method SAQ (Semi-Algebraic Quartet reconstruction). SAQ is consistent with the most general Markov model of nucleotide substitution and, in particular, it allows for rate ...