Fingerprinting Review

What substance is present in human fingerprints?​

• Salt

• Chloride

• Oils

• Glucose

What are the red triangles and green circles?

• red - deltas

  green - cores

• red - cores

  green - deltas

• red - forks

  green - loops

• red - loops

  green - cores

Label the fingerprints with the correct label.

c

d

e

f

a

b

Loop

Double Loop Whorl

Tented Arch

Plain Whorl

Plain Arch

Central Pocket Whorl

How many matching minutiae are sufficient to make a match?

• 22

• 8

• 19

• 12

Identify the minutiaes in this print:

1. ​ ​ ​ (a)  

2.​ ​ (b)  

3.​ ​ ​ (c)  

4.​ (d)  

5.​ (e)  

• ending ridge
• eye
• Double Bifurcation
• Island

The number of ridges between the core and the center of the delta is called the

• loop pattern

• print age

• ridge count

• delta location

If a fingerprint is pressed into thick clotted blood, the pattern that will be created is called

• patent

• latent

• plastic

• hardened

The best way to preserve a fingerprint is to

• freeze it

• wax coat it

• photograph it

• wrap it in plastic

Iodine fuming is ideal for obtaining fingerprints from porous surfaces such as

• glass

• plastic

• paper

• metal

Ninhydrin spray is used on porous surfaces and changes fingerprints to purple when it reacts with

• fats/oils

• water

• DNA

• amino acids