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Related Experiment Videos

Human gene mapping.

R Williamson1

  • 1Department of Biochemistry, St Mary's Hospital Medical School, University of London, UK.

Ciba Foundation Symposium
|January 1, 1987
PubMed
Summary
This summary is machine-generated.

Human genome mapping is now complete using linked markers and DNA fragments. This genetic mapping advances understanding of development, gene expression, and inherited diseases.

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Area of Science:

  • Genomics
  • Human Genetics
  • Molecular Biology

Background:

  • The human genome can now be comprehensively mapped using closely linked genetic markers.
  • Over 500 coding genes and approximately 2000 anonymous DNA fragments have been identified and localized.

Purpose of the Study:

  • To detail the current state of human genome mapping.
  • To outline future strategies for achieving a complete human genome sequence.

Main Methods:

  • Utilizing closely linked markers for genome mapping.
  • Employing restriction fragment length polymorphisms (RFLPs) to identify DNA variations.
  • Mapping human chromosomes with ordered markers approximately 10 map units apart.

Main Results:

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  • Most human chromosomes are mapped, with the X and 21 chromosomes particularly well-defined.
  • Over 200 probes have been ordered on the X chromosome.
  • Identified numerous two-allele polymorphisms caused by single base changes affecting restriction enzyme sites.

Conclusions:

  • The current mapping strategies are paving the way for a complete human genome sequence.
  • A fully sequenced human genome promises to revolutionize our understanding of development, gene expression, and genetic diseases.