Related Experiment Video
Updated: Jun 29, 2026
12:00
A Practical Guide to Phylogenetics for Nonexperts
Published on: February 6, 2014
Phylogenetic--evolutionary approaches to bioinformatics
1School of Animal and Microbial Sciences, University of Reading, UK. m.pagel@reading.ac.uk
Briefings in Bioinformatics
|July 24, 2001
Summary
Phylogenetic analysis is crucial for understanding evolution. This study details how phylogenies aid in gene evolution research, from site variability to gene duplication events.
Area of Science:
- Bioinformatics and Evolutionary Biology.
Background:
- Phylogenies are fundamental to evolutionary biology research.
- Statistical analyses in bioinformatics often require phylogenetic considerations.
Purpose of the Study:
- To demonstrate the diverse applications of phylogenies in evolutionary research.
- To provide a comprehensive overview of how phylogenetic methods can address key questions in molecular evolution.
Main Methods:
- Utilizing phylogenetic principles to analyze gene sequence data.
- Applying statistical and phylogenetic methods for evolutionary inference.
Main Results:
- Phylogenies enable investigation of gene site variability.
- Reconstruction of ancestral gene and protein states is facilitated by phylogenies.
- Phylogenies help identify gene duplication and parallel/convergent evolution.
- Analysis of molecular clock predictions and correlated evolutionary changes.
Conclusions:
- Phylogenetic analysis offers a powerful framework for studying molecular evolution.
- A presented table outlines relevant statistical and phylogenetic methods for researchers.
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...
02:05Gene Evolution - Fast or Slow?
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
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...
02:05Gene Evolution - Fast or Slow?
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
01:29Modern 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...
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,...