Results 21 to 30 of about 1,652,278 (203)

A metric on phylogenetic tree shapes [PDF]

open access: yesSystematic Biology, 2016
Abstract The 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 ...
Colijn, C, Plazzotta, G
openaire   +3 more sources

Letter: TreeAdder: a tool to assist the optimal positioning of a new leaf into an existing phylogenetic tree [PDF]

open access: yes, 2007
TreeAdder is a computer application that adds a leaf in all possible positions on a phylogenetic tree. The resulting set of trees represent a dataset appropriate for maximum likelihood calculation of the optimal tree.
Gatherer, Derek
core   +1 more source

Drawing Phylogenetic Trees [PDF]

open access: yes, 2005
We present linear-time algorithms for drawing phylogenetic trees in radial and circular representations. In radial drawings given edge lengths (representing evolutionary distances) are preserved, but labels (names of taxons represented in the leaves) need to be adjusted, whereas in circular drawings labels are perfectly spread out, but edge lengths ...
Christian Bachmaier   +2 more
openaire   +2 more sources

Characterization of a Branch of the Phylogenetic Tree [PDF]

open access: yesJournal of Theoretical Biology, 2003
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
Samuel, Stuart A., Weng, Gezhi
openaire   +3 more sources

Stochastic errors vs. modeling errors in distance based phylogenetic reconstructions [PDF]

open access: yes, 2012
Dörr D, Gronau I, Moran S, Yavneh I. Stochastic errors vs. modeling errors in distance based phylogenetic reconstructions. Algorithms for Molecular Biology.
Gronau, Ilan   +11 more
core   +1 more source

Operads and phylogenetic trees

open access: yesTheory and Applications of Categories, 2017
We construct an operad $\mathrm{Phyl}$ whose operations are the edge-labelled trees used in phylogenetics. This operad is the coproduct of $\mathrm{Com}$, the operad for commutative semigroups, and $[0,\infty)$, the operad with unary operations corresponding to nonnegative real numbers, where composition is addition.
Baez, JC, Otter, N
openaire   +4 more sources

Towards a Taxonomically Intelligent Phylogenetic Database [PDF]

open access: yes, 2007
This note outlines some of the key intellectual obstacles that stand in the way of creating a usable phylogenetic database. These challenges include the need to accommodate multiple taxonomic names and classifications, and the need for tools to query ...
Roderic Page
core   +1 more source

Implicit inequality constraints in a binary tree model [PDF]

open access: yes, 2011
In this paper we investigate the geometry of a discrete Bayesian network whose graph is a tree all of whose variables are binary and the only observed variables are those labeling its leaves.
Zwiernik, Piotr   +3 more
core   +1 more source

A synthesis tree of the Copepoda: integrating phylogenetic and taxonomic data reveals multiple origins of parasitism [PDF]

open access: yesPeerJ, 2021
The Copepoda is a clade of pancrustaceans containing 14,485 species that are extremely varied in their morphology and lifestyle. Not only do copepods dominate marine plankton and sediment communities and make up a sizeable component of the freshwater ...
James P. Bernot   +2 more
doaj   +2 more sources

On the number of vertices of each rank in phylogenetic trees and their generalizations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2016
We find surprisingly simple formulas for the limiting probability that the rank of a randomly selected vertex in a randomly selected phylogenetic tree or generalized phylogenetic tree is a given integer.
Miklós Bóna
doaj   +1 more source

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