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Related Concept Videos

Karyotyping01:17

Karyotyping

Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
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...

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Detailed cytogenetic analysis of three duck species (the northern pintail, mallard, and common goldeneye) and karyotype evolution in the family Anatidae (Anseriformes, Aves).

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The origin of B chromosomes in yellow-necked mice (Apodemus flavicollis)-Break rules but keep playing the game.

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[Chromosomal variability of the Maximowicz's vole Microtus maximowiczii (Rodentia, Cricetidae, Microtus)].

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[Molecular cytogenetic markers of cryptic species and hybrids of the common vole superspecies complex Microtus arvalis s. l].

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Comparative cytogenetics of hamsters of the genus Allocricetulus argyropulo 1932 (Cricetidae, Rodentia).

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Rapid Genotyping of Animals Followed by Establishing Primary Cultures of Brain Neurons
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[Comparative cytogenetics of rodents].

S A Romanenko, N A Lemskaia, V R Beklemisheva

    Genetika
    |November 11, 2010
    PubMed
    Summary

    Comparative chromosome painting reveals two distinct evolutionary paths in rodents. Some groups maintain conserved genomes, while others exhibit rapid chromosomal changes, impacting rodent genome evolution.

    Area of Science:

    • Comparative genomics
    • Cytogenetics
    • Mammalian evolution

    Background:

    • Rodent genomes exhibit diverse evolutionary trajectories.
    • Understanding karyotypic evolution is key to mammalian phylogeny.

    Purpose of the Study:

    • To analyze comparative chromosome painting data in Glires.
    • To classify modern rodents based on karyotypic evolution.

    Main Methods:

    • Comparative chromosome painting using chromosome-specific libraries.
    • Analysis of cytogenetic and molecular data.

    Main Results:

    • Two distinct rodent groups identified based on genome evolution.
    • Sciuromorpha, Castorimorpha, and Anomaluromoprpha show conserved genomes.

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  • Myomorpha displays rapid karyotypic evolution with chromosome breaks and fusions.

    • Conclusions:

    • Rodent karyotypic evolution is characterized by two divergent patterns.
    • Conserved genomes may reflect ancestral mammalian genome structure.
    • Hystricomorpha's phylogenetic placement remains uncertain based on current data.