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Identification, isolation and characterization of canine minisatellite sequences
1Department of Biochemistry, University of Leicester, UK.
Animal Genetics
|October 1, 1994
Summary
Researchers identified canine minisatellite sequences using DNA fingerprinting. Polymorphic minisatellites were found, with one breed showing reduced genetic diversity due to inbreeding.
Area of Science:
- Genetics
- Molecular Biology
- Canine Genomics
Background:
- Minisatellites are repetitive DNA sequences.
- DNA fingerprinting techniques are crucial for genetic analysis.
Purpose of the Study:
- To identify and isolate canine minisatellite sequences.
- To analyze intrabreed variation and inbreeding in Bedlington Terriers.
Main Methods:
- Screening a canine ordered-array library with Jeffreys multilocus probes.
- Analyzing minisatellite polymorphism and heterozygosity.
- DNA sequencing of minisatellite regions.
Main Results:
- Identified 7 polymorphic canine minisatellites with high heterozygosities (20-88%).
- Observed reduced allelic variation in Bedlington Terriers, correlating with inbreeding.
- Characterized the most polymorphic minisatellite, cCfaMP5, noting sequence similarities to human minisatellites.
Conclusions:
- Canine minisatellites can be effectively isolated and analyzed.
- Minisatellite analysis reveals significant genetic diversity patterns within breeds.
- The study highlights the impact of inbreeding on canine genetic variation.