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Using CODIS To Solve Crime CODIS uses two indexes to generate investigative leads in crimes that contain biological evidence. The forensic index contains DNA profiles from biological evidence left at crime scenes, and the offender index contains DNA profiles of individuals convicted of violent crime. Each State in the Nation has a DNA database law that defines which convicted offenders must have their profiles entered into CODIS; some States even require that DNA profiles from all felons be entered into the database. CODIS enables Federal, State, and local forensic crime laboratories to work together—between jurisdictions and across State lines—to solve crimes.
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