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Isolation and chromosomal assignment of 100 highly informative human simple sequence repeat polymorphisms.
T J Hudson1, M Engelstein, M K Lee
1Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.
Genomics
|July 1, 1992
Summary
Researchers identified 100 simple sequence repeat (SSR) DNA markers and mapped them to human chromosomes. Most SSR markers showed high heterozygosity, aiding genetic studies.
Area of Science:
- Human Genetics
- Molecular Biology
- Genomics
Background:
- Simple sequence repeats (SSRs) are valuable genetic markers.
- Efficient mapping of SSRs across the human genome is crucial for genetic research.
Purpose of the Study:
- To isolate and map 100 highly informative SSR polymorphisms to specific human chromosomes.
- To characterize the distribution and properties of these novel SSR markers.
Main Methods:
- Somatic cell hybrid analysis was employed for chromosomal mapping.
- Polymerase Chain Reaction (PCR) was used to amplify SSR markers.
- Heterozygosity levels and chromosomal distribution were assessed.
Main Results:
- One hundred SSR markers, predominantly (CA)n repeats, were successfully mapped.
- All chromosomes, except 22 and Y, contained at least one SSR marker.
- Marker frequency generally correlated with chromosome length, with an exception on chromosome 15.
Conclusions:
- The study provides a valuable set of 100 polymorphic SSR markers for human genetic studies.
- The distribution patterns offer insights into SSR repeat distribution across the human genome.
- These SSRs are suitable for diverse genetic applications due to high heterozygosity and uniform PCR conditions.