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DNA typing of fingerprints using capillary electrophoresis: Effect of dactyloscopic powders

✍ Scribed by David E. O. Van Hoofstat; Dieter L. D. Deforce; Isabel P. Hubert De Pauw; Elfride G. Van den Eeckhout

Book ID
101319634
Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
207 KB
Volume
20
Category
Article
ISSN
0173-0835

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✦ Synopsis

DNA typing is a useful tool in crime solving, not only for blood samples, sperm, or saliva but also for traces of DNA left on tools or pieces of clothing used in burglaries or thefts. On these kinds of samples, the sources of DNA are extremely small amounts of skin debris left after gripping tools. When a sensitive technique such as polymerase chain reaction (PCR) coupled with capillary electrophoresis is used, it is possible to get a profile from these low amounts of DNA. The classic technique in such cases, used in forensic sciences, is to reveal fingerprints by different dactyloscopic powders. Therefore, DNA profiling was performed on physical fingerprints left on glass and wooden plates, in order to establish eventual problems or interferences involved by using both techniques simultaneously. Eleven dactyloscopic powders were investigated on their influence on DNA typing. The results show that some can be used together with DNA profiling but that serious precautions have to be taken to avoid contamination.

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