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The first step in DNA fingerprinting is to break open the sample cells and collect the DNA. Next, many copies of the DNA are made using polymerase chain reaction (PCR).
To get the DNA fingerprint:
For a criminal investigation, photos of the criminal and suspect DNA are compared. The results in this case show that the suspect is not the criminal.
Last Revised: November 29, 2012
Author: Healthwise Staff
Medical Review: Kathleen Romito, MD - Family Medicine & Siobhan M. Dolan, MD, MPH - Reproductive Genetics
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