Unit 1: Introduction to Forensic Dermatoglyphics - Practice Quiz

1 The term dermatoglyphics refers to the scientific study of:

2 The word dermatoglyphics is derived from Greek words meaning:

3 Who is often credited as the pioneer of modern fingerprint science through his 1892 book Finger Prints?

4 The first fingerprint bureau in the world was established in which country?

5 The Henry Classification System is associated with which two Indian officers who assisted Sir Edward Henry?

6 Friction ridges begin to form during fetal development at approximately:

7 Friction ridges are formed at the junction of which two skin layers?

8 The small elevated structures in the dermis responsible for shaping ridge patterns are called:

9 Once fully formed, a person's fingerprint patterns remain:

10 Fingerprints of identical twins are:

11 Which principle states that no two fingerprints from different fingers are exactly alike?

12 The principle of permanence in fingerprinting means that:

13 The three basic fingerprint pattern types are:

14 Which fingerprint pattern is generally the most common in the population?

15 A pattern in which ridges enter from one side, rise in the center, and exit the same side describes a:

16 Ridge characteristics used to individualize fingerprints are commonly known as:

17 A point where a single ridge splits into two ridges is called a:

18 Poroscopy is the study of which fingerprint feature?

19 Edgeoscopy deals with the study of:

20 The residue left behind in a latent fingerprint is composed mainly of:

21 The term dermatoglyphics is derived from two Greek words. Based on its etymology, what does the study literally focus on?

22 A student notes that a scientist published Finger Prints (1892), providing the first statistical proof of their uniqueness and permanence. Who was this scientist?

23 The Henry Classification System, widely adopted in the West, was substantially developed with the contributions of two Indian officers. Who were they?

24 During fetal development, friction ridges begin forming from structures called volar pads. Approximately during which gestational period are the ridge patterns fully established and permanent?

25 The regression (flattening) of the volar pads relative to the timing of ridge formation largely determines which of the following?

26 Friction ridges form at the boundary between which two skin layers, controlled by the basal cell layer?

27 If the outer epidermal layer of a finger is superficially abraded but the basal/dermal layer remains intact, what happens to the ridge pattern?

28 The principle of permanence in fingerprinting specifically asserts which of the following?

29 An examiner argues that even identical twins can be distinguished by their fingerprints. Which fundamental principle best supports this claim?

30 A fingerprint shows ridges entering from one side, recurving, and exiting on the same side, with one delta present. Which pattern type is this?

31 How many deltas does a typical whorl pattern possess, and what is the associated feature used to type-line trace it?

32 A pattern has ridges that rise in the center with a sharp upthrust or a slight recurve but lacks a true recurving ridge and a delta typical of a loop. This is best classified as which of the following?

33 In Galton's terminology, minutiae are individual ridge characteristics. Which pair correctly describes the two most common minutiae types?

34 A minutia where a single short ridge is completely surrounded by other ridges but is longer than a dot is best identified as which characteristic?

35 Two examiners compare a latent and a known print. Which level of detail primarily involves ridge path and minutiae like bifurcations and endings?

36 Poroscopy, as a means of identification, relies on the study of which feature and is attributed to which pioneer?

37 Edgeoscopy is most useful in which forensic situation compared to conventional minutiae matching?

38 The scientific validity of poroscopy for identification rests on the assumption that sweat pores are which of the following?

39 Latent fingerprint residue is a complex mixture. Which of the following combinations correctly represents its major components?

40 The chemical development reagent ninhydrin targets which specific component of fingerprint residue?

41 In 1892, Sir Francis Galton published Finger Prints, in which he estimated the probability of two individuals sharing identical fingerprints. Which of the following best represents the order of magnitude of his calculated probability of a coincidental complete match?

42 The Henry Classification System, adopted widely by law-enforcement agencies, was substantially developed with critical contributions from two Indian officers. Who were they?

43 Friction ridges begin forming during fetal development at the boundary between which two skin layers, driven by the emergence of primary and secondary ridges?

44 The prevailing developmental model holds that friction ridge configuration is influenced by volar pad regression. If a volar pad regresses early and is low/symmetric, which pattern type is most likely to form?

45 By approximately which gestational period are the friction ridge patterns considered fully formed and permanent (barring deep injury) for the remainder of life?

46 The three fundamental premises of fingerprint identification are individuality, permanence, and perennial nature. Which scenario would most directly challenge the principle of permanence rather than individuality?

47 A latent print examiner concludes an identification using the ACE-V methodology. Within the principle of individuality, which statement most accurately reflects the current scientific stance on friction ridge uniqueness?

48 A pattern possesses two deltas and at least one ridge that makes a complete circuit, and one of the recurving ridges is cut by an imaginary line between the deltas. This most precisely classifies as which pattern?

49 In the Henry system, a loop is designated ulnar or radial based on the direction the ridges flow. On the right hand, if loop ridges open toward the thumb side, the loop is classified as:

50 A tented arch is distinguished from a plain arch primarily by which feature?

51 During comparison, an examiner notes a point where a single ridge divides into two ridges, and elsewhere a ridge simply ends. These two minutiae are respectively termed:

52 A short ridge connecting two parallel ridges is called a bridge, while a small ridge branching off and reattaching to form an eyelet is called:

53 Poroscopy, introduced by Edmond Locard, is particularly valuable in forensic identification because:

54 Edgeoscopy, proposed by Salil Chatterjee, is based on the premise that:

55 In a smudged latent where standard minutiae counting yields fewer than the desired number of matching points, an examiner turns to combined poroscopy and edgeoscopy. What is the principal forensic advantage of doing so?

56 Fingerprint residue is a complex mixture from multiple gland types. The predominantly water-based secretion containing chlorides, amino acids, urea, and lactic acid originates chiefly from which glands?

57 Ninhydrin is a classic reagent for developing latent prints on porous surfaces. It reacts specifically with which component of the residue to produce the purple 'Ruhemann's purple'?

58 An examiner chooses a lipid-sensitive technique for a latent print. Which reagent/method would be most appropriate given the sebaceous (lipid) content of residue?

59 The term 'dermatoglyphics' was coined by Harold Cummins and Charles Midlo. Etymologically and by definition, the field encompasses:

60 Fingerprint detail is often categorized into three levels. Which of the following correctly maps a feature to its level?