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Related Experiment Videos

SNP typing strategies.

Bruce Budowle1

  • 1FBI Laboratory, Quantico, VA 22135, USA. bruce.budowle@ic.fbi.gov

Forensic Science International
|February 24, 2005
PubMed
Summary
This summary is machine-generated.

Single nucleotide polymorphism (SNP) typing offers a valuable forensic tool when short tandem repeat (STR) analysis fails. It aids in degraded DNA, ancestry, and physical characteristic determination.

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Area of Science:

  • Forensic Science
  • Genetics
  • Molecular Biology

Background:

  • Short tandem repeat (STR) typing is the standard in forensic DNA analysis.
  • Limitations exist with STR typing, particularly with degraded or limited DNA samples.
  • Emerging technologies are needed to supplement existing forensic methods.

Purpose of the Study:

  • To introduce single nucleotide polymorphism (SNP) typing as an adjunct forensic technology.
  • To outline potential applications of forensic SNP analysis.
  • To describe and compare key SNP typing methodologies.

Main Methods:

  • Review of current and emerging SNP typing strategies.
  • Description of SNaPshot, SNPstream Ultra High Throughput System, and electrospray ionization mass spectrometry.

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  • Highlighting advantages of specific methods for forensic applications.

    • Main Results:

    • SNP typing is a viable adjunct technology for forensic casework.
    • Applications include mtDNA and Y chromosome analysis, degraded DNA, ancestry, and physical characteristics.
    • Electrospray ionization mass spectrometry shows particular promise for mtDNA typing.

    Conclusions:

    • SNP typing complements STR analysis, enhancing forensic capabilities.
    • Diverse forensic applications are anticipated for SNP typing.
    • Specific technologies like mass spectrometry offer advantages for certain forensic DNA analyses.