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Related Concept Videos

Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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Southern Blot02:57

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Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
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Applications of Molecular Taxonomy01:20

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Related Experiment Video

Updated: May 14, 2026

Enhanced Genetic Analysis of Single Human Bioparticles Recovered by Simplified Micromanipulation from Forensic ‘Touch DNA’ Evidence
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Forensic DNA profiling and database.

S Panneerchelvam1, M N Norazmi

  • 1Forensic Science Programme, School of Health Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.

The Malaysian Journal of Medical Sciences : MJMS
|February 7, 2013
PubMed
Summary

DNA technology revolutionizes criminal justice through DNA databases. This article details compiling the Combined DNA Index System (CODIS) using validated short tandem repeat (STR) markers for crime detection.

Keywords:
DNA fingerprintingForensic DNA databaseForensic DNA profilingRFLPSTRVNTRmicro-satellitesmini-satellites

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Area of Science:

  • Forensic Science
  • Genetics
  • Molecular Biology

Background:

  • DNA technology has significantly impacted criminal justice systems.
  • DNA databases serve as crucial resources for forensic DNA typing.
  • Short tandem repeat (STR) DNA markers are commonly utilized in forensic analysis.

Purpose of the Study:

  • To discuss the essential steps in compiling the Combined DNA Index System (CODIS).
  • To highlight the use of validated polymerase chain reaction (PCR) amplified STRs.
  • To explain the application of DNA databases in crime detection.

Main Methods:

  • Compilation of the CODIS database.
  • Utilizing validated polymerase chain reaction (PCR) amplified STR markers.
  • Data analysis for forensic DNA typing.

Main Results:

  • Established procedures for creating a comprehensive DNA database.
  • Demonstrated the effectiveness of STR markers in forensic identification.
  • Showcased the role of CODIS in aiding crime investigations.

Conclusions:

  • DNA databases, particularly CODIS, are powerful tools in criminal justice.
  • Validated PCR-amplified STRs are essential for accurate DNA profiling.
  • The compilation and use of DNA databases enhance crime detection capabilities.