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OpenStudy (anonymous):

When a small amount of DNA is found in human saliva on a glass at a crime scene, how do forensic scientists analyze the saliva to find a suspect?

OpenStudy (aaronq):

they use certain sections of the DNA (short tandem repeats (STR)) as markers, this is then compared to DNA samples from suspects.

OpenStudy (redeemed1312):

Exactly what @aaronq said.

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