Results 11 to 20 of about 281,835 (164)

Biochemical and phylogenetic networks-II: X-trees and phylogenetic trees [PDF]

open access: yesJournal of Mathematical Chemistry, 2021
The present study, which is a continuation of the previous paper, augments a recent work on the use of phylogenetic networks. We develop techniques to characterize the topology of various X-trees and binary trees of biological and phylogenetic interests. We have obtained the results for various k-level X-trees and phylogenetic networks with variants of
Rajan, R. Sundara   +5 more
openaire   +3 more sources

Phylogenetic trees [PDF]

open access: yesJournal of Software for Algebra and Geometry, 2021
We introduce the package PhylogeneticTrees for Macaulay2 which allows users to compute phylogenetic invariants for group-based tree models. We provide some background information on phylogenetic algebraic geometry and show how the package PhylogeneticTrees can be used to calculate a generating set for a phylogenetic ideal as well as a lower bound for ...
Baños, Hector   +8 more
openaire   +3 more sources

Matchings and phylogenetic trees [PDF]

open access: yesProceedings of the National Academy of Sciences, 1998
This paper presents a natural coordinate system for phylogenetic trees using a correspondence with the set of perfect matchings in the complete graph. This correspondence produces a distance between phylogenetic trees, and a way of enumerating all trees in a minimal step order. It is useful in randomized algorithms because it enables moves on the space
Diaconis, Persi W., Holmes, Susan P.
openaire   +2 more sources

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   +1 more source

Are allometric model parameters of aboveground biomass for trees phylogenetically constrained?

open access: yesPlant Diversity, 2023
Knowledge of which biological and functional traits have, or lack, phylogenetic signal in a particular group of organisms is important to understanding the formation and functioning of biological communities.
Xing-Zhao Huang   +4 more
doaj   +1 more source

The Shapley value of phylogenetic trees [PDF]

open access: yesJournal of Mathematical Biology, 2007
References added, and a section (calculating the Shapley value of a tree game from its subtrees) was removed for length reasons (request of referee) and may appear in another paper. 16 pages; related work at http://www.math.hmc.edu/~su/papers.html. Journal of Mathematical Biology, to appear.
Haake, Claus-Jochen   +2 more
openaire   +6 more sources

Towards a barnacle tree of life: integrating diverse phylogenetic efforts into a comprehensive hypothesis of thecostracan evolution [PDF]

open access: yesPeerJ, 2019
Barnacles and their allies (Thecostraca) are a biologically diverse, monophyletic crustacean group, which includes both intensely studied taxa, such as the acorn and stalked barnacles, as well as cryptic taxa, for example, Facetotecta.
Christine Ewers-Saucedo   +6 more
doaj   +2 more sources

AMY-tree: an algorithm to use whole genome SNP calling for Y chromosomal phylogenetic applications

open access: yesBMC Genomics, 2013
Background Due to the rapid progress of next-generation sequencing (NGS) facilities, an explosion of human whole genome data will become available in the coming years.
Van Geystelen Anneleen   +2 more
doaj   +1 more source

All galls are divided into three or more parts: recursive enumeration of labeled histories for galled trees

open access: yesAlgorithms for Molecular Biology, 2023
Objective In mathematical phylogenetics, a labeled rooted binary tree topology can possess any of a number of labeled histories, each of which represents a possible temporal ordering of its coalescences.
Shaili Mathur, Noah A. Rosenberg
doaj   +1 more source

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

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