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Alterations in the ID of a DNA Fingerprint

Of course the panacea of DNA Fingerprinting for criminals, is to be able to alter the existing DNA finger print, either for the duration of the crime, or for the investigation afterward.

Just the idea of mucking about with your core DNA areas, sounds like an invitation for primate mutation (and an ape appetite for vegetation), the thought of actually doing it is, well ... fairly creepy. But then, some criminals are fairly creepy...

A study titled: Changes in DNA induced by toxic agents
(Forensic Sci Int. 1996 Apr 23;78(3):169-78, Sawaguchi T, Wang X, Sawaguchi A. Department of Legal Medicine, Tokyo Women's Medical College, Japan.)

Seems to suggest that it is possible, although from this publication, most of the methods would be fatal.

This is a preliminary report on significant alterations in the DNA profile caused by toxic substances which potentially has profound implications for the use of DNA techniques in identification. Acute DNA changes in the globus pallidus of the brain in man caused by carbon monoxide poisoning were detected by DNA profiling with probe 33.15. Chronic DNA changes in rabbits caused by methamphetamine were detected by DNA profiling with probe 33.15, AmpFLP on D1S80, TH01, CSF1PO and TPOX loci. Pre-intoxication bands appeared, disappeared or were discoloured after intoxication. With PCR-dot blot hybridization testing for HLADQ alpha, pre-intoxication positive spots became negative after intoxication and pre-intoxication negative spots became positive after intoxication. Intravenous injection of 10 mg/kg of methamphetamine every 2 days for 2 weeks was a large enough dose for inducement of genetic changes. In this investigation, clear changes in DNA due to intoxication were confirmed.

The results of the study, do suggest the possibility of a market for criminal re-sequencing for the purpose of acquittal. The repercussions of such an action, I can't imagine, are going to be better than going to prison, since all we are able to confirm through this study is that the DNA changes. There is no mention of a Predictable change... just A Change... so place your bets... monkey time!

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