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Fingerprint Test Review. Topics on Your Test!. Identify types of fingerprints left at a scene based upon description Latent, plastic, visible Chemical development techniques Superglue, Silver Nitrate, Iodine, Ninhydrin Which technique is best for different surfaces
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Topics on Your Test! • Identify types of fingerprints left at a scene based upon description • Latent, plastic, visible • Chemical development techniques • Superglue, Silver Nitrate, Iodine, Ninhydrin • Which technique is best for different surfaces • Identify general ridge pattern • Whorl, Loop or Arch • Identify minutiae • Compare prints to determine if they are the same or different and give explanation to your determination • Primary Classification • AFIS
In the womb approximately 10.5 weeks estimated gestational age. It is thought that the movement of the fetus is what contributes to the unique ridge characteristics.
What is the first fundamental principle of the fingerprint system?
First Principle: A Fingerprint is an Individual Characteristic; No two fingers have yet been found to possess identical ridge characteristics.
This individuality of a fingerprint is not determined by its general shape or pattern but by a careful study of its ridge characteristics, also known as minutiae.
Second Fundamental Principle of Fingerprints: A Fingerprint will remain unchanged during an individual’s lifetime.
What is the third fundamental principle of the fingerprint system?
Third Principle: Fingerprints have general ridge patterns that permit them to be systematically classified. All fingerprints are divided into three classes on the basis of their general pattern: Loops, Whorls, and Arches.These three classes form the basis for all 10-finger classification systems.
What is it called when a dot or short ridge have ridges on either side of them?
Which minutiae or ridge characteristic occurs when a friction ridge bifurcates (forks) and then converges (joins back together) to form a continuation of a single ridge?
