Practice Test Geeks(FDC) Forensic DNA Certification Practice Test
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FDC DNA Databases & CODIS Flashcards

6 cards from real FDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What does CODIS stand for in the context of forensic DNA?

    Answer: Combined DNA Index System

    CODIS stands for Combined DNA Index System, the FBI's national DNA database infrastructure used to link forensic DNA profiles.

  2. Which tier of CODIS is maintained at the national level by the FBI?

    Answer: NDIS

    NDIS (National DNA Index System) is the highest tier of CODIS, maintained by the FBI and containing profiles from all participating states.

  3. Which DNA profile index in CODIS contains profiles from unsolved crime scenes?

    Answer: Forensic Index

    The Forensic Index contains DNA profiles developed from crime scene evidence collected during unsolved criminal investigations.

  4. What is the minimum number of STR loci currently required for a CODIS core profile?

    Answer: 20

    In 2017, CODIS expanded from 13 to 20 core STR loci to improve discrimination power and international compatibility.

  5. A 'candidate match' in CODIS must be confirmed by which process?

    Answer: Re-extraction and re-analysis of the original evidence sample

    A CODIS candidate match requires confirmation through re-analysis of the original evidence, not just comparison of the database profiles.

  6. Which federal law governs the collection, storage, and use of DNA profiles in the national CODIS database?

    Answer: DNA Identification Act of 1994

    The DNA Identification Act of 1994 authorized the FBI to establish CODIS and set legal requirements for DNA profile use and data security.

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  1. criminalistics.com — Score validity, retake policy, score release, passing score, exam format, fees, eligibility, test delivery, exam information · verified Oct 2026