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Related Experiment Videos

Polymorphic CAC/T repetitive sequences in the pig genome 1

W Coppieters1, A Van de Weghe, A Depicker

  • 1Department of Genetics, Faculty of Veterinary Medicine, University of Liège, Belgium.

Animal Genetics
|October 1, 1995
PubMed
Summary

Researchers identified pig DNA markers with significant length variation using triplet repeats. These genetic markers, analyzed via Southern blot and PCR, show potential for DNA fingerprinting and genetic studies in pigs.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Animal Science

Background:

  • Genomic libraries are crucial for identifying and characterizing genetic material.
  • DNA fingerprinting relies on identifying polymorphic genetic markers.
  • Triplet repeat sequences are known sources of genetic variation.

Purpose of the Study:

  • To isolate and characterize novel polymorphic DNA markers in pigs.
  • To evaluate the utility of these markers for genetic analysis and fingerprinting.
  • To assess the length polymorphism of identified triplet repeat loci.

Main Methods:

  • Isolation of genomic clones from a pig DNA library using DNA fingerprint probes.
  • Sequence analysis to identify triplet repeat regions (CAC and CAT).

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  • Southern blot hybridization and polymerase chain reaction (PCR) amplification to assess polymorphism.

    • Main Results:

    • Three genomic clones containing interrupted triplet repeats (CAC/CAT) were isolated.
    • Significant length variation was observed at these loci via Southern blot.
    • Polymorphism was confirmed for two loci using PCR amplification.
    • The PiGMaP reference pedigree was successfully typed for all three loci.

    Conclusions:

    • The identified triplet repeat loci are polymorphic and suitable for pig genetic studies.
    • These markers can be valuable tools for DNA fingerprinting and population genetics in pigs.
    • The findings contribute to the understanding of genetic diversity in pigs.