Fingerprint Principles Quiz

According to criminal investigators, what is the first fundamental principle of fingerprints?

• A fingerprint is an individual characteristic; no two people have been found with the exact same fingerprint pattern.

• Fingerprints can change over time due to environmental factors.

• Fingerprints are identical among family members.

• Fingerprints are not unique to each individual.

Which type of arch is a fingerprint pattern?

• Radial arch

• Plain arch

• Central arch

• Double arch

What percentage of fingerprints are arches?

• 60%

• 35%

• 5%

• 15%

In fingerprint classification, which pattern is represented by 5%?

• Loop

• Whorl

• Arch

• Square

Which loop type is associated with the left hand when ridges flow towards the thumb?

• Ulnar Loop

• Radial Loop

• Central Pocket Loop

• Double Loop

Which loop type is associated with the right hand when ridges flow towards the little finger?

• Ulnar Loop

• Radial Loop

• Central Pocket Loop

• Double Loop

In a plain whorl, what happens when a line is drawn between the two deltas?

• The line touches no ridges.

• The line touches some of the curved ridges.

• The line touches the center core.

• The line touches all ridges.

Which type of whorl is identified if none of the center core touches the line drawn between the deltas?

• Plain whorl

• Central pocket whorl

• Accidental

• Loop

Which type of print is often left by a finger coated in a visible substance?

• Latent

• Plastic

• Patent

• Invisible

What is an example of a minutiae pattern that involves a crossing?

• Ridge ending

• Bifurcation

• Ridge crossing

• Dot