Related Experiment Video
Updated: Jul 7, 2026
12:00
A Practical Guide to Phylogenetics for Nonexperts
Published on: February 5, 2014
Interactive visualization software for exploring phylogenetic trees and clades.
1Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, 15213, USA. mad@cs.cmu.edu
Bioinformatics (Oxford, England)
|February 12, 2008
Summary
The Summary Tree Explorer (STE) is a Java application that interactively visualizes phylogenetic trees. It uses coupled node-link diagrams and clade lists, allowing users to explore evolutionary relationships more effectively.
Area of Science:
- Phylogenetics and evolutionary biology
- Bioinformatics and computational biology
Background:
- Phylogenetic tree exploration is crucial for understanding evolutionary relationships.
- Existing tools often present trees using a single representation, limiting comprehensive analysis.
Purpose of the Study:
- To introduce the Summary Tree Explorer (STE), a novel Java application for interactive phylogenetic tree exploration.
- To enhance the analysis of phylogenetic datasets by integrating multiple tree representations.
Main Methods:
- Developed STE as a Java application utilizing two coupled interactive representations: a node-and-link diagram and a textual list of common clades.
- Implemented real-time synchronization where actions in one representation (selection, pruning, filtering, re-rooting) are immediately reflected in the other.
Main Results:
- STE provides an integrated environment for exploring phylogenetic trees, mitigating the limitations of single-representation tools.
- The coupled representations allow for a more comprehensive understanding of clade relationships within phylogenetic datasets.
Conclusions:
- The Summary Tree Explorer (STE) offers an effective solution for interactively exploring sets of phylogenetic trees.
- Integrating visual and textual representations in STE enhances the analysis and interpretation of evolutionary relationships.
Related Concept Videos
03:21Phylogenetic 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...
03:21Phylogenetic 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...
01:23Phylogeny
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...
02:54Evolutionary 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...
01:28Microbial 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,...
01:20Applications 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...