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Related Concept Videos

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...
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,...
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...
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...
Modern Molecular Taxonomy01:29

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...

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Updated: May 14, 2026

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

Next-generation phylogenomics.

Cheong Xin Chan1, Mark A Ragan

  • 1Institute for Molecular Bioscience, and ARC Centre of Excellence in Bioinformatics, The University of Queensland, Brisbane, QLD, 4072, Australia.

Biology Direct
|January 24, 2013
PubMed
Summary
This summary is machine-generated.

Next-generation sequencing generates vast genomic data, challenging traditional phylogenomics. New alignment-free methods are needed for accurate evolutionary relationship analysis.

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A Practical Guide to Phylogenetics for Nonexperts

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Last Updated: May 14, 2026

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

Amplification of Near Full-length HIV-1 Proviruses for Next-Generation Sequencing
10:18

Amplification of Near Full-length HIV-1 Proviruses for Next-Generation Sequencing

Published on: October 16, 2018

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

Area of Science:

  • Genomics
  • Evolutionary Biology
  • Bioinformatics

Background:

  • Next-generation sequencing technologies enable unprecedented breadth and depth of genome data generation.
  • Traditional phylogenomics relies on multiple sequence alignment and tree inference, which face computational limitations with large datasets.
  • Next-generation data present challenges including incompleteness, errors, and biological complexities like lateral gene transfer.

Purpose of the Study:

  • To address the computational challenges posed by large-scale genomic datasets in phylogenomics.
  • To advocate for the development and adoption of next-generation phylogenomic approaches.
  • To highlight the limitations of current phylogenomic methods with increasing data volume and complexity.

Main Methods:

  • Review of current phylogenomic methodologies.
  • Discussion of computational scalability issues in sequence alignment and tree inference.
  • Introduction of the concept of alignment-free approaches for phylogenomic analysis.

Main Results:

  • Traditional phylogenomic methods are becoming computationally infeasible for large-scale next-generation sequencing data.
  • Existing methods struggle with data quality issues and biological complexities inherent in massive genomic datasets.
  • Alignment-free approaches are proposed as a necessary advancement for next-generation phylogenomics.

Conclusions:

  • Next-generation sequencing data necessitates the evolution of phylogenomic methodologies.
  • Alignment-free methods offer a promising solution to overcome computational bottlenecks in analyzing large genomic datasets.
  • Future phylogenomic studies must incorporate advanced computational strategies to fully leverage the potential of next-generation sequencing.