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Related Concept Videos

Phylogenetic Trees03:21

Phylogenetic Trees

Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.The length of the branches can depict time or the relative amount of change among organisms. For instance, the branch length might indicate the number of amino acid changes in the sequence that underlies the...
Phylogenetic Trees03:21

Phylogenetic Trees

Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.The length of the branches can depict time or the relative amount of change among organisms. For instance, the branch length might indicate the number of amino acid changes in the sequence that underlies the...
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Phylogeny01:23

Phylogeny

Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire...
Microbial Phylogeny01:28

Microbial Phylogeny

Understanding the evolutionary relationships among microorganisms is fundamental to microbial ecology and taxonomy. Phylogenetic trees are essential tools for inferring these relationships, relying primarily on comparative analyses of molecular sequences such as DNA, RNA, or proteins. In microbial studies, these trees typically depict the evolutionary paths of diverse bacterial and archaeal species by mapping genetic differences accumulated over time.Phylogenetic trees are composed of tips,...
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...

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A Practical Guide to Phylogenetics for Nonexperts
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Published on: February 5, 2014

Drawing explicit phylogenetic networks and their integration into SplitsTree.

Tobias H Kloepper1, Daniel H Huson

  • 1Center for Bioinformatics ZBIT, Tübingen University, Sand 14, 72076 Tübingen, Germany. kloepper@informatik.uni-tuebingen.de

BMC Evolutionary Biology
|January 26, 2008
PubMed
Summary
This summary is machine-generated.

SplitsTree software now visualizes explicit phylogenetic networks using a modified equal angle algorithm. This extension enhances usability for biologists by integrating explicit network methods with existing phylogenetic tree tools.

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Area of Science:

  • Computational Biology
  • Bioinformatics

Background:

  • SplitsTree is a Java-based software for phylogenetic tree and network analysis.
  • It offers diverse methods for phylogenetic data import/export, calculation, and visualization.
  • The framework includes both command-line and graphical user interfaces.

Purpose of the Study:

  • To address challenges in visualizing explicit phylogenetic networks.
  • To improve the accessibility and usability of explicit phylogenetic network methods for biologists.

Main Methods:

  • A modified equal angle algorithm was developed for visualizing explicit phylogenetic networks, integrating reticulations.
  • An extension was created for the SplitsTree framework to incorporate explicit phylogenetic network methods.

Main Results:

  • The modified equal angle algorithm provides an appealing visualization for explicit phylogenetic networks.
  • The SplitsTree extension successfully integrates explicit phylogenetic network methods.
  • SplitsTree now uniquely combines implicit and explicit network methods with standard phylogenetic tree methods in a GUI.

Conclusions:

  • An extension for SplitsTree 4 was developed to incorporate explicit phylogenetic networks.
  • This extension includes core classes for handling explicit phylogenetic networks and their visualization.