DNA can be used to identify suspects in a crime by comparing DNA samples found at the crime scene with samples taken from suspects. If the DNA matches, it suggests the suspect was at the scene, while a lack of matching DNA can help establish their innocence.
Humans share 99.9% of their DNA with each other. In 1-2 sentences, explain how DNA can be used to understand whether suspects are innocent or guilty of a crime? Please answer simply, yet coherently, and intended for 9th grade.
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