FORS-2106EL Study Guide - Final Guide: Endonuclease, Nylon, Hemoglobin
27 Jun 2018
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FORS-2106 - Lab Exam Review
Orientation
-Another common practice in all forensic labs is that known material never gets
examined on the same workbench, or sometimes even in the same room, as
unknown material. Obviously this is to avoid any potential for cross-contamination
-A very simple optical (or light) microscope is a magnifying lens or hand loupe,
composed of one convex lens.
-The most common device used to analyze fingerprints by forensic scientists today is
the fingerprint magnifier
-These are high quality lenses, designed to produce as little distortion as possible,
mounted on a small stand, for comparison of known to unknown prints
-When processing a crime scene, 1 officer scribing other processing, observing errors,
and witness
-officers will work in pairs so one is scribing and the other is processing, also
observing to make sure nothing is missed, and to be a witness to anything that occurs
-Ocular Magnification x Objective Magnification = Total Magnification
-depth of focus’ is the thickness of an object that is in focus at any given point
-Dissection kit: Scalpel, Blades, Fine forceps, Large/blunt forceps, Scissors, Sharp
probe, Blunt probe, Metric ruler
-Ocular Magnification x Objective Magnification = Total Magnification
-‘depth of focus’ is the thickness of an object that is in focus at any given point, the
higher power of magnification, the less depth of focus you will have
-ethyl acetate (a killing agent that you soak the plaster of Paris with) is what was in the
killing jars
-we used 80% alcohol in our vials
Forensic Entomology
-Label: the date of collection, the locality, the name of the collector, and the identity of
the insect
-A label is placed on the outside of the vial, and one is placed inside the vial. This
redundancy is just in case some alcohol drips down the outside of the vial and
causes it to fall of
-Review life in the dead zone note
-live maggots can be grown to full age to see what they are
-we tell maggots apart by their prolegs, beetles have them flies do not, beetles also
brown sometimes and bigger sometimes
Forensic Botany
-Forensic botany is an emerging area of forensic science, that encompasses
everything from pollen, to plant DNA
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Another common practice in all forensic labs is that known material never gets examined on the same workbench, or sometimes even in the same room, as unknown material. Obviously this is to avoid any potential for cross-contamination. A very simple optical (or light) microscope is a magnifying lens or hand loupe, composed of one convex lens. The most common device used to analyze ngerprints by forensic scientists today is the ngerprint magni er. These are high quality lenses, designed to produce as little distortion as possible, mounted on a small stand, for comparison of known to unknown prints. When processing a crime scene, 1 of cer scribing other processing, observing errors, and witness. Of cers will work in pairs so one is scribing and the other is processing, also observing to make sure nothing is missed, and to be a witness to anything that occurs.
