DNA in Drug Crimes: When Is DNA Used—and When Is It Misused?

I. Introduction: Why DNA Is Showing Up in Drug Cases at All For decades, drug crimes were understood—by investigators, attorneys, and courts alike—as fundamentally non-biological offenses. Unlike violent crimes involving bloodshed, sexual assault, or physical struggle, narcotics cases traditionally centered on contraband itself, not the biology of the people allegedly connected to it. The core…

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