Tenprint Fingerprint Certification Tenprint Fingerprint Collection & Analysis 3 — Questions and Answers
Question 1: When taking plain impressions on a tenprint card, the fingers should be placed in what orientation?
- Rolled side-to-side to capture full detail
- Pressed simultaneously without rolling, fingertips pointing downward (Correct answer)
- Pressed one at a time with a slight clockwise twist
- Placed horizontally across the card width
Correct answer: Pressed simultaneously without rolling, fingertips pointing downward
Plain impressions are taken by pressing all four fingers simultaneously straight down without rolling, with fingertips angled toward the card.
Question 2: The Henry Classification System primarily organizes fingerprints based on which feature?
- The number of ridge endings in each finger
- The presence and position of loops, whorls, and arches (Correct answer)
- The ridge count between core and delta
- The ink density of rolled impressions
Correct answer: The presence and position of loops, whorls, and arches
The Henry system classifies fingerprints into a hierarchical formula based on the pattern types (loops, whorls, arches) found across all ten fingers.
Question 3: An 'enclosure' (or lake) minutia type is best described as:
- A ridge that abruptly terminates
- A single ridge that splits and rejoins enclosing an oval space (Correct answer)
- Two separate ridges running parallel for a short distance
- A dot-shaped ridge fragment with no length
Correct answer: A single ridge that splits and rejoins enclosing an oval space
An enclosure occurs when a ridge bifurcates and then reconverges, forming a closed oval or lake shape within the ridge flow.
Question 4: What is the correct action when a tenprint card's plain impression does not agree with the rolled impression for the same finger?
- Accept the rolled impression as authoritative and discard the plain
- Note the discrepancy and retake the entire tenprint card (Correct answer)
- Re-roll only the disagreeing finger on a separate card
- Flag the plain impression with a red marker and submit as-is
Correct answer: Note the discrepancy and retake the entire tenprint card
Disagreement between plain and rolled impressions signals a recording error; the entire card should be retaken to ensure accuracy and integrity.
Question 5: Which fingerprint pattern type accounts for approximately 60–65% of all fingerprints in the general population?
- Arch
- Whorl
- Loop (Correct answer)
- Tented arch
Correct answer: Loop
Loops are the most prevalent fingerprint pattern, comprising roughly 60–65% of all fingerprints found in the general population.
Question 6: In a latent-to-tenprint comparison, what is the first step an examiner takes during the ACE-V analysis phase?
- Verification by a second examiner
- Comparison of corresponding features side-by-side
- Evaluation and conclusion drawing
- Analysis of the latent print in isolation (Correct answer)
Correct answer: Analysis of the latent print in isolation
ACE-V begins with Analysis, where the examiner studies the latent print alone to assess quality, identify features, and set comparison expectations before introducing the known print.
Question 7: What does 'friction ridge skin' refer to specifically?
- The outer layer of skin across the entire palm and finger dorsum
- The specialized skin on palmar and plantar surfaces bearing raised ridges (Correct answer)
- Any skin exhibiting elevated scar tissue from abrasion
- The sub-dermal layer that anchors ridge patterns permanently
Correct answer: The specialized skin on palmar and plantar surfaces bearing raised ridges
Friction ridge skin is the unique, patterned skin found on the palmar surface of the hands and plantar surface of the feet, characterized by raised ridges used for gripping.
Tenprint Fingerprint Certification Tenprint Fingerprint Collection & Analysis 3
When taking plain impressions on a tenprint card, the fingers should be placed in what orientation?