Principles of Forensic DNA
for Officers of the Court
Principles of Forensic DNA for Officers of the Court
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Module 4 :: Intro To the Lab

Topic 1 :: History and Development of Forensic DNA Analysis

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DNA Typing—DQα (DQA1)/ Polymarker

The first forensic application of PCR used the HLA DQ-alpha (DQA1) system which was expanded to include additional genetic systems called Polymarker™ (PM).

Although DQa/Polymarker was faster and more sensitive than RFLP, results were less discriminating. For example, matching profiles might be found in one in several thousand people. In RLFP, the match could be one in several million.

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