Skin and Biology
This is the outermost layer of the skin.
What is the epidermis?
This is the most common of all general fingerprint pattern types.
What is a loop?
Ninhydrin and Superglue (cyanoacrylate) lift latent prints by reacting with this component found in sweat.
What are amino acids?
On a standard fingerprint image, this feature appears dark.
What is a ridge?
What the four letters in the acronym AFIS stand for.
What is Automated Fingerprint Identification System?
Sweat glands located specifically on the hands and feet are known by this name.
What are eccrine glands?
This pattern type is present in approximately 30% of the population.
What is a whorl?
Silver Nitrate lifts latent fingerprints by reacting with this chemical substance in sweat.
What is salt (sodium chloride)?
These three primary types of prints are created when fingers leave visible impressions in soft materials like clay, putty, or wax.
What are plastic fingerprints?
The fingerprint identification classification method used today is named after this historic individual.
What is Galton Henry (or Sir Francis Galton / Sir Richard Henry)?
Fingerprints begin forming in the womb at this week of pregnancy.
This general fingerprint pattern is the least common among the population.
What is an arch?
This chemical process requires heating in a vapor tent to produce a distinct white print.
What is cyanoacrylate (Superglue fuming)?
The study of fingerprints specifically for identification purposes is known by either of these two terms.
What is dactylography or dactyloscopy?
The AFIS database contains approximately this total number of fingerprint records.
What is 50 million?
Fingerprints form during fetal development because this layer of skin grows faster than the surrounding layers, causing it to collapse and fold.
What is the basal layer?
This pattern type looks like a bull's-eye and contains two deltas.
This chemical developer turns prints on wood or Styrofoam a black or reddish-brown color.
What is Silver Nitrate?
When a fingerprint expert testifies in court that two prints match with absolute certainty, they have identified at least this many matching minutiae.
What is 12 or more matching minutiae?
Forensic evidence collectors must carefully avoid these two main mistakes when gathering prints at a crime scene.
What are adding their own fingerprints to evidence and destroying prints already present?
Give two reasons why criminals are usually unsuccessful when attempting to permanently destroy their fingerprints.
What are fingerprints grow back and scars actually make fingerprints even more unique?
These fingerprint patterns enter from one side and exit from the opposite side with a rise in the center.
What are arches?
his chemical technique produces a brown print that must be photographed immediately because it quickly fades.
What is iodine fuming?
Fingerprints are categorized as this type of evidence because they can be linked directly back to a single specific individual.
What is individual evidence?
Besides fingerprints, name two other physical biometric features currently used for human identification.
What are eyes (iris/retina), facial patterns, or hand vein/palm crease patterns?