Objectives: Students will be able to describe, compare, and identify the different types of fingerprints. DO NOW Update your Exit Ticket Tracker 1. How and when are friction ridges formed? 2.What is the Bertillonage system? 3.Describe a loop, a whorl, and an arch. Exit Ticket 1. Raised portions on your hands that allow for gripping: a. Fingerprint b. Whorls 2. Define basal layer. c. Friction Ridges 3. If 65% of fingerprints have loops, how are fingerprints considered individual evidence? Announcements Exit Ticket trackers- absent Extra Credit Quiz 4 make ups Notebook Checks today Quiz on Tuesday Gloves on Friday and Monday Review Fingerprint Bertillonage System Basal Layer Loop Whorl Arch Galton System Turn/ Talk: why would the Bertillonage sytem fail Showed how to classify fingerprints using loops, whorls, and arches Fingerprints stay the same from birth to death No two fingerprints are identical Prints cannot be altered Possible to classify Ten card system L. Thumb L. Index L. Middle L. Ring L. Little R. Thumb R. Index R. Middle R. Ring R. Little Mine L. Index L. Index L. Index L. Index Classmates Rules: Partners Light Pressure Nail edge to nail edge CFU…. T/F: your left index and right index fingerprints are the same Ridge classification Minutiae- description of fingerprints Core Short Ridge Ending ridge Delta Hook Crossover Bridge Bifurcation Island (dot) Enclosure Eye (yesterdays activity) CFU…. Minutia is the word used to describe what? 12 Point Match Criminal Courts will generally accept 8-12 point match 12 point system Your finger prints Some one else finger prints Exit Ticket Criminal court will accept a _____ point match for fingerprint a. 1 b. 12 c. zero, no two fingerprint matches are the same. 2. To individualize fingerprints, you must use the structure of ridges called _______ 3. What is the difference between fingerprint patterns and ridge characteristics? 1.