Results 41 to 50 of about 300,530 (260)

Analysis on Algorithms for Constructing Phylogenetic Trees From Distances

open access: yesIEEE Access, 2019
Neighbour-joining algorithm (NJ for short) is an used widely algorithm for constructing phylogenetic trees from distances because of its high accuracy. For NJ costs a lot of time to construct phylogenetic trees for the large input data, it does not often
Juan Wang
doaj   +1 more source

Generating normal networks via leaf insertion and nearest neighbor interchange

open access: yesBMC Bioinformatics, 2019
Background Galled trees are studied as a recombination model in theoretical population genetics. This class of phylogenetic networks has been generalized to tree-child networks and other network classes by relaxing a structural condition imposed on ...
Louxin Zhang
doaj   +1 more source

TreeSwift: A massively scalable Python tree package

open access: yesSoftwareX, 2020
Phylogenetic trees are essential to evolutionary biology, and numerous methods exist that attempt to extract phylogenetic information applicable to a wide range of disciplines, such as epidemiology and metagenomics.
N. Moshiri
doaj   +1 more source

Spaces of phylogenetic networks from generalized nearest-neighbor interchange operations [PDF]

open access: yes, 2015
Phylogenetic networks are a generalization of evolutionary or phylogenetic trees that are used to represent the evolution of species which have undergone reticulate evolution.
Huber, Katharina T.   +3 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

A strict upper bound for the partition distance and the cluster distance of phylogenetic trees for each fixed pair of topological trees. [PDF]

open access: yesPLoS ONE, 2018
For each given pair of (rooted or unrooted) topological trees with the same number of leaves a strict upper bound is shown for the tree partition distance (also called symmetric difference metric and Robinson-Foulds distance)-in case of unrooted trees ...
Martin Middendorf, Nicolas Wieseke
doaj   +1 more source

Kernelizations for the hybridization number problem on multiple nonbinary trees [PDF]

open access: yes, 2016
Given a finite set $X$, a collection $\mathcal{T}$ of rooted phylogenetic trees on $X$ and an integer $k$, the Hybridization Number problem asks if there exists a phylogenetic network on $X$ that displays all trees from $\mathcal{T}$ and has reticulation
Kelk, Steven   +2 more
core   +4 more sources

Gut microbiota diversity is prognostic in metastatic hormone receptor‐positive breast cancer patients receiving chemotherapy and immunotherapy

open access: yesMolecular Oncology, EarlyView.
In this exploratory study, we investigated the relationship between the gut microbiota and outcome in patients with metastatic hormone receptor‐positive breast cancer, treated in a randomized clinical trial with chemotherapy alone or chemotherapy in combination with immune checkpoint blockade.
Andreas Ullern   +7 more
wiley   +1 more source

Cherry picking in forests: A new characterization for the unrooted hybrid number of two phylogenetic trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
Phylogenetic networks are a special type of graph which generalize phylogenetic trees and that are used to model non-treelike evolutionary processes such as recombination and hybridization. In this paper, we consider {\em unrooted} phylogenetic networks,
Katharina T. Huber   +2 more
doaj   +1 more source

Evolutionary dynamics of the chloroplast genome in Daphne (Thymelaeaceae): comparative analysis with related genera and insights into phylogenetics

open access: yesFEBS Open Bio, EarlyView.
Comparative analysis of chloroplast genomes from 14 genera of Thymelaeaceae revealed variation in gene content, ranging from 128 to 142 genes, primarily influenced by IR expansion/contraction events and pseudogenization of ndhF, ndhI, and ndhG. Two large inversions were detected within the large single‐copy region, including a synapomorphic inversion ...
Abdullah   +8 more
wiley   +1 more source

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