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Related Concept Videos

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,...
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.
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.
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 kingdom.
Gene Evolution - Fast or Slow?02:05

Gene 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...

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Related Experiment Video

Updated: May 30, 2026

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

Phylogenomic networks.

Tal Dagan1

  • 1Institute of Molecular Evolution, Heinrich-Heine University of Düsseldorf, Universitätstr. 1, Düsseldorf 40225, Germany. tal.dagan@uni-duesseldorf.de

Trends in Microbiology
|August 9, 2011
PubMed
Summary
This summary is machine-generated.

Phylogenomic networks offer a novel approach to understanding genome evolution beyond traditional phylogenetic trees. This method captures complex evolutionary events like lateral gene transfer, providing deeper insights into genome biology.

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A Practical Guide to Phylogenetics for Nonexperts
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JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

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Related Experiment Videos

Last Updated: May 30, 2026

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

A Practical Guide to Phylogenetics for Nonexperts
12:00

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Published on: February 5, 2014

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics
07:28

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

Published on: October 19, 2021

Area of Science:

  • Genomics
  • Evolutionary Biology
  • Bioinformatics

Background:

  • Phylogenomics traditionally uses phylogenetic trees to study genome evolution.
  • Evolutionary processes such as recombination and lateral gene transfer (LGT) are often non-tree-like.
  • Existing tree-based methods may not fully capture the complexity of genome evolution.

Purpose of the Study:

  • To introduce and explore phylogenomic networks as an alternative to tree-based phylogenies.
  • To demonstrate the capability of phylogenomic networks in modeling non-tree-like evolutionary events.
  • To highlight the potential of network analysis in advancing our understanding of genome evolution.

Main Methods:

  • Reconstruction of phylogenomic networks from fully sequenced genomes.
  • Utilizing a network model representing pairwise evolutionary relations between genomes.
  • Applying network research methodologies to analyze phylogenomic data.

Main Results:

  • Phylogenomic networks can effectively model both vertical inheritance and lateral gene transfer (LGT).
  • The network structure allows for the reconstruction of complex evolutionary histories.
  • Analysis of network properties provides new insights into genome evolution.

Conclusions:

  • Phylogenomic networks provide a more comprehensive framework for studying genome evolution.
  • This approach accommodates non-tree-like evolutionary processes, offering a richer perspective.
  • The application of network science to phylogenomics opens new avenues for research in genome biology.