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Principles of Forensic DNA for Officers of the Court

DNA Typing - DQa(DQA1)/Polymarker

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National Institute of Justice (NIJ) (see reuse policy).

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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