MARTIN SHIELDS / SCIENCE PHOTO LIBRARY MARTIN SHIELDS / SCIENCE PHOTO LIBRARY
Autoradiograph showing DNA fingerprint results from a rape investigation. The DNA fingerprint shows that suspect 1 is a match with the sperm DNA. Suspect 2 and the husband can be excluded because their DNA is not a match with the sperm. This does not prove that suspect 1 is guilty but it does include him and, combined with other DNA probe results, would yield a mathematical probability of his guilt.
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