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Related Concept Videos

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...
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...
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...
The Tree of Life - Bacteria, Archaea, and Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, and Eukaryotes

The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both extant and...
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,...

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Related Experiment Video

Updated: Jun 24, 2026

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

A web-based Tree View (TV) program for the visualization of phylogenetic trees.

Yufeng Zhai1, Jason Tchieu, Milton H Saier

  • 1Department of Biology, University of California at San Diego, La Jolla 92093-0116, USA.

Journal of Molecular Microbiology and Biotechnology
|January 5, 2002
PubMed
Summary
This summary is machine-generated.

We developed Tree View (TV), a user-friendly web program for visualizing protein phylogenetic trees using dynamic data structures. This tool aids in convenient protein sequence analysis and can be integrated into other bioinformatics applications.

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Molecular Evolution

Background:

  • Phylogenetic trees are crucial for understanding evolutionary relationships among proteins.
  • Visualizing these trees efficiently is essential for biological data analysis.

Purpose of the Study:

  • To develop a novel, user-friendly web-based program for constructing phylogenetic trees of homologous proteins.
  • To create a dynamic data structure algorithm for efficient tree visualization.

Main Methods:

  • Designed a web-based program named Tree View (TV).
  • Implemented a dynamic data structure algorithm for phylogenetic tree generation.
  • Focused on homologous protein families.

Main Results:

  • The Tree View program successfully generates phylogenetic trees.
  • The program features a user-friendly interface.
  • Demonstrated ease of implementation into other protein sequence analysis tools.

Conclusions:

  • Tree View offers an efficient and accessible method for phylogenetic analysis of protein families.
  • The program's design facilitates integration and enhances protein sequence analysis workflows.