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Related Concept Videos

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...
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,...
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.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...
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.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...
Synteny and Evolution02:31

Synteny and Evolution

John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, Eukaryotes

The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both extant and...

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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

Muroid rodents: Phylogeny and evolution.

F M Catzeflis1, J P Aguilar, J J Jaeger

  • 1François Catzeflis, Jean-Pierre Aguilar and Jean-Jacques Jaeger are at the Institut des Sciences de l'Evolution, UA 327 CNRS, USTL, Pl. E. Bataillon, 34095 Montpellier, France.

Trends in Ecology & Evolution
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

The Muroidea, a diverse rodent group including mice and rats, has seen significant evolutionary research. Unanswered questions remain regarding molecular and paleontological data conflicts and the rapid DNA evolution in some species.

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Last Updated: Jun 5, 2026

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Published on: August 14, 2018

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Area of Science:

  • * Rodent evolutionary biology and paleontology.

Background:

  • * The Muroidea, a diverse rodent superfamily, originated recently in geological terms.
  • * This group includes common species like mice, rats, gerbils, and hamsters.
  • * Recent decades have seen major advancements in understanding muroid taxonomy, systematics, phylogeny, and paleontology.

Purpose of the Study:

  • * To review the current state of knowledge on Muroidea evolutionary biology.
  • * To identify key unanswered questions and areas for future research.

Main Methods:

  • * Synthesis of recent findings in muroid taxonomy, systematics, phylogeny, and paleontology.
  • * Analysis of existing hypotheses on muroid evolutionary biology.
  • * Identification of discrepancies between molecular and paleontological data.

Main Results:

  • * Significant progress has been made in formalizing hypotheses regarding muroid evolutionary biology.
  • * Important questions persist, particularly concerning conflicts between molecular and paleontological data.
  • * The rapid rate of DNA change in rats and mice requires further investigation.

Conclusions:

  • * While much has been learned about Muroidea evolution, significant research gaps remain.
  • * Further investigation is needed to resolve data conflicts and understand rapid DNA evolution.
  • * Continued research in muroid paleontology and molecular biology is crucial.