Results 51 to 60 of about 495,194 (321)

Ghost-tree: creating hybrid-gene phylogenetic trees for diversity analyses. [PDF]

open access: yes, 2016
BackgroundFungi play critical roles in many ecosystems, cause serious diseases in plants and animals, and pose significant threats to human health and structural integrity problems in built environments.
Bolyen, Evan   +8 more
core   +2 more sources

A matroid associated with a phylogenetic tree [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
Special issue PRIMA 2013 A (pseudo-)metric D on a finite set X is said to be a \textquotelefttree metric\textquoteright if there is a finite tree with leaf set X and non-negative edge weights so that, for all x,y ∈X, D(x,y) is the path distance in the tree between x and y. It is well known that not every metric is a tree metric. However, when
Dress, Andreas   +2 more
openaire   +5 more sources

A metric on phylogenetic tree shapes [PDF]

open access: yesSystematic Biology, 2016
AbstractThe shapes of evolutionary trees are influenced by the nature of the evolutionary process, but comparisons of trees from different processes are hindered by the challenge of completely describing tree shape. We present a full characterization of the shapes of rooted branching trees in a form that lends itself to natural tree comparisons.
Colijn, C, Plazzotta, G
openaire   +7 more sources

Characterization of a Branch of the Phylogenetic Tree [PDF]

open access: greenJournal of Theoretical Biology, 2005
We use a combination of analytic models and computer simulations to gain insight into the dynamics of evolution. Our results suggest that certain interesting phenomena should eventually emerge from the fossil record. For example, there should be a ``tortoise and hare effect'': Those genera with the smallest species death rate are likely to survive much
Stuart Samuel, Gezhi Weng
openalex   +6 more sources

Rearrangement operations on unrooted phylogenetic networks

open access: yesTheory and Applications of Graphs, 2019
Rearrangement operations transform a phylogenetic tree into another one and hence induce a metric on the space of phylogenetic trees. Popular operations for unrooted phylogenetic trees are NNI (nearest neighbour interchange), SPR (subtree prune and ...
Remie Janssen, Jonathan Klawitter
doaj   +1 more source

The complete mitochondrial genome of long-tailed red-toothed shrew (Episoriculus leucops) and implication of phylogenetic status

open access: yesMitochondrial DNA. Part B. Resources, 2021
We determined a complete mitochondrial genome of Episoriculus leucops. This mitogenome is a circular molecule with 16,838 bp in length, containing 13 protein-coding genes, 22 transfer RNA genes (tRNA), and two ribosomal RNA genes (rRNA).
Dan Chen   +4 more
doaj   +1 more source

A new resolution function to evaluate tree shape statistics.

open access: yesPLoS ONE, 2019
Phylogenetic trees are frequently used in biology to study the relationships between a number of species or organisms. The shape of a phylogenetic tree contains useful information about patterns of speciation and extinction, so powerful tools are needed ...
Maryam Hayati   +2 more
doaj   +1 more source

Understanding the tree of life: an overview of tree-reading skill frameworks

open access: yesEvolution: Education and Outreach, 2019
Diagrammatic depictions of evolutionary relationships play an increasingly important role in scientific and educational literature. Reading evolutionary trees is seen as a major challenge for biologists in learning about evolution and its applications in
Thilo Schramm   +2 more
doaj   +1 more source

Conflicting phylogenetic signals in plastomes of the tribe Laureae (Lauraceae) [PDF]

open access: yesPeerJ, 2020
Background Gene tree discordance is common in phylogenetic analyses. Many phylogenetic studies have excluded non-coding regions of the plastome without evaluating their impact on tree topology. In general, plastid loci have often been treated as a single
Tian-Wen Xiao   +5 more
doaj   +2 more sources

The Fair Proportion is a Shapley Value on phylogenetic networks too

open access: yes, 2018
The Fair Proportion of a species in a phylogenetic tree is a very simple measure that has been used to assess its value relative to the overall phylogenetic diversity represented by the tree.
Coronado, Tomás M.   +2 more
core   +1 more source

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