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Related Experiment Videos

DNA sequence mapping by fluorescence in situ hybridization.

B F Brandriff1, L A Gordon, B J Trask

  • 1Lawrence Livermore National Laboratory, University of California 94550.

Environmental and Molecular Mutagenesis
|January 1, 1991
PubMed
Summary

Fluorescence in situ hybridization (FISH) uses DNA probes to map DNA localization and distribution. Researchers can select different chromatin targets for precise in situ analysis.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Cytology

Background:

  • Fluorescence in situ hybridization (FISH) is a molecular cytogenetic technique.
  • Various DNA probes (genomic, repetitive, unique, chromosome-specific) are utilized.
  • FISH visualizes DNA-probe hybridization to chromatin targets using fluorescent reporters.

Purpose of the Study:

  • To explore the application of different DNA probes in FISH.
  • To investigate the strategic selection of chromatin targets for DNA analysis.
  • To address research questions concerning DNA localization, mapping, and distribution in situ.

Main Methods:

  • Utilizing diverse DNA probes, including total genomic DNA, repetitive sequences, unique sequences, and composite chromosome-specific probes.
  • Employing fluorescence in situ hybridization (FISH) for DNA visualization.

Related Experiment Videos

  • Selecting and analyzing three distinct chromatin targets: metaphase chromosomes, somatic interphases, and zygote interphases.

    • Main Results:

    • Demonstrated the versatility of different DNA probe types in FISH experiments.
    • Showcased the utility of selecting specific chromatin targets (metaphase chromosomes, somatic interphases, zygote interphases) for targeted DNA analysis.
    • Successfully applied FISH for the localization, mapping, and distribution studies of DNA in situ.

    Conclusions:

    • FISH is a powerful technique for in situ DNA analysis, adaptable through probe selection.
    • Strategic choice of chromatin targets enhances the precision and scope of DNA localization and mapping studies.
    • The methodology supports diverse research questions in molecular biology and genetics.