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Hypervariable 'minisatellite' regions in human DNA.

A J Jeffreys, V Wilson, S L Thein

    Nature
    |March 7, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Human DNA contains minisatellite regions with a core sequence. These regions are highly variable, enabling unique DNA fingerprinting for genetic analysis.

    Area of Science:

    • Genetics
    • Molecular Biology

    Background:

    • The human genome features numerous dispersed tandem-repetitive minisatellite regions.
    • These regions share a conserved 10-15 base pair core sequence, analogous to Escherichia coli's generalized recombination signal (chi).

    Purpose of the Study:

    • To investigate the polymorphic nature of minisatellites.
    • To explore the utility of minisatellite core sequences for DNA fingerprinting.

    Main Methods:

    • Utilized a probe based on a tandem-repeat of the minisatellite core sequence.
    • Applied this probe to detect multiple highly variable loci simultaneously.

    Main Results:

    • Minisatellites exhibit significant polymorphism, primarily due to variations in repeat copy number.

    Related Experiment Videos

  • The core sequence probe successfully identified numerous polymorphic loci.

    • Conclusions:

    • Minisatellite regions are a valuable source of genetic variation.
    • DNA fingerprinting using minisatellite core sequences offers a powerful tool for human genetic analysis.