DNA links

Interview with DNA Authority Dr. Bruce Weir
The Q&A's in this interview with DNA forensics expert Dr. Bruce Weir cover the methods and controversies surrounding collection and lab testing of DNA evidence. Weir was an expert witness for the prosecution in the O.J. Simpson criminal trial.

Polymerase Chain Reaction (PCR)
This is an illustration of the elegant technique of PCR by which fragments of DNA can be made to replicate rapidly. Thus, even trace amounts of DNA samples found at a crime scene (such as a hair strand) can produce sufficient copies to carry out forensic tests.

DNA Fingerprinting in Human Health and Society
Here you'll find the six steps of DNA fingerprinting in the laboratory explained, as well as the uses of DNA fingerprints in genetic diagnosis and other kinds of personal identification.

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