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Related Experiment Videos

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
PubMed
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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.

Related Experiment Videos

  • 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.