Related Experiment Video
Updated: May 14, 2026

12:00
A Practical Guide to Phylogenetics for Nonexperts
Published on: February 5, 2014
AGP: a multimethods web server for alignment-free genome phylogeny.
Jinkui Cheng1, Fuliang Cao, Zhihua Liu
1Nanjing Forestry University, Nanjing, China.
Molecular Biology and Evolution
|February 8, 2013
Summary
Alignment-free methods simplify whole-genome phylogenetic analysis, overcoming challenges like sequence rearrangement. We developed the Alignment-Free Genome Phylogeny (AGP) web server to make these methods accessible for genome comparison and tree construction.
Area of Science:
- Bioinformatics
- Computational Biology
- Genomics
Background:
- Whole-genome phylogenetic analysis faces challenges with alignment-based methods due to sequence complexity.
- Alignment-free methods offer an alternative but often lack accessible tools for researchers.
Purpose of the Study:
- To address the lack of user-friendly tools for alignment-free genome phylogeny.
- To provide a comprehensive web server integrating popular alignment-free methods for phylogenetic analysis.
Main Methods:
- Implementation of popular alignment-free phylogenetic methods.
- Development of a web server (AGP) for genome phylogeny construction.
- Integration of phylogenetic tree construction, visualization, and comparison functionalities.
Main Results:
- A user-friendly web server, AGP, has been developed and implemented.
- AGP integrates multiple alignment-free methods for whole-genome phylogeny.
- The server facilitates tree construction, visualization, and comparative analysis.
Conclusions:
- The AGP web server enhances accessibility and usability of alignment-free methods for whole-genome phylogeny.
- AGP is expected to advance research in comparative genomics and phylogenetic studies.
- The server and source code are publicly available for research use.
More Related Videos
Related Concept Videos
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 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.
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.
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 kingdom.
Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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,...

