Fingerprint Patterns and Minutiae
Types of Fingerprints
Collecting Fingerprint Evidence
Skin
Preservation of Prints
100
Draw a "fork" pattern on the board.
100
This type of print cannot be seen unless it receives some form of treatment.
Latent
100
Name a method that could be used to collect a latent fingerprint as evidence.
Dusting or Fuming
100
What is the inner most layer of skin?
Dermis.
100
Why should fingerprint evidence be collected immediately at a crime scene?
The longer you wait, the more chance there is of the prints being destroyed.
200
What is the most common fingerprint pattern?
Loop. (65%)
200
Give an example of a patent print.
Finger print left in ink, paint, blood, etc.
200
How would you go about collecting a patent print that was left in blood as evidence?
Take a picture.
200
What is the most outer layer of skin?
Epidermis.
200
What should you wear if you must handle evidence that might have have fingerprints on it?
Gloves.
300
What type of pattern is this?
Loop.
300
On what type of material might you find a plastic print?
Clay, mud, putty, etc.
300
A piece of paper is suspected to have fingerprints on it at a crime scene. What method should be used to collect these prints?
Iodine fuming.
300
What is a dermal ridge?
Raised portion of skin on fingers.
300
Why should evidence not be shipped to a lab before properly being collected?
Prevent destruction of prints.
400
How can minutiae individualize a fingerprint?
Minutiae make a fingerprint distinct and unique as no two fingerprints will have the same exact minutiae.
400
These prints are caused by the transfer of oils onto a surface.
Latent.
400
A table is suspected to have fingerprints on it at a crime scene. What method should be utilized to collect this evidence?
Dusting.
400
How does a valley appear on a fingerprint?
Light.
400
How would you go about preserving a fingerprint that was dusted?
Transfer dust to tape and then onto a piece of paper.
500
Which fingerprint pattern is the least common?
Arches. (5%)
500
A bottle is found at a crime scene and must be super glue fumed to obtain the prints as evidence. What type of print is this?
Latent
500
How would you collect a plastic print as evidence?
Mold or casting of the print.
500
What secretes from our skin which leaves fingerprints?
Oils, sweats.
500
What can be used to make an iodine fuming permanent?
Benzoflavone.