Unit 4 - Fingerprints

Question 1

fingerprint

Answer 1

an imprint made by ridge patterns on the tip of a finger; also used to describe the characteristic pattern of DNA fragments

Question 2

microns

Answer 2

a micron is one-millionth of a meter or one-thousandth of a millimeter

Question 3

dactyloscopy

Answer 3

the study of fingerprints. the word is derived from the Greek daktulos, meaning finger.

Question 4

anthropometry

Answer 4

the study of human body measurements. the word is derived from the Greek anthropos, meaning man

Question 5

loop

Answer 5

fingerprint pattern with one or more ridges entering with one side, curving, then going out on the same side entered

Question 6

delta

Answer 6

triangular area found in all loop and whorl patterns

Question 7

core

Answer 7

area found near the center of all loop and whorl patterns

Question 8

whorl

Answer 8

fingerprint pattern with at least two deltas and a core

Question 9

arch

Answer 9

least common and simplest fingerprint pattern. Arches have no delta or core. all ridges enter one side and exits the other

Question 10

minutiae

Answer 10

in descriptions of fingerprints, ridge characteristics

Question 11

plastic prints

Answer 11

three dimensional print made as indentations in soft materials such as fresh paint, putty, or wax; also called an indented or molded print

Question 12

visible print

Answer 12

fingerprint left by a finger that has touched blood, paint, ink, or the like

Question 13

latent print

Answer 13

fingerprint made by the deposit of the perspiration or body oils; invisible to the naked eye until developed

Question 14

ninhydrin

Answer 14

a biochemical reagent used to detect free amino and carboxyl groups in proteins and peptides; the resulting color is called Rehemann’s purple

Question 15

bifurcations

Answer 15

common minutiae, shaped like a two pronged fork