Hair analysis
When viewing human hair samples with the naked eye which is a striking characteristic?
A. medulla pattern
B. Coronal pattern
C. hair color
D. none of the above
C. hair color
Ninhydrin is best described as a chemical that can detect?
fingerprints
What are we able to conclude when a match is made between a suspect's blood and the blood collected at a crime scene?
The suspect is likely to have been at the crime scene
what material is a slide made out of
glass
Chance of having the same DNA as another person
essentially 0%
True or False: One strand of hair from a person's head will have the same medulla pattern as another strand of hair from the same person's head.
False
What surface is the fuming method most effective on?
dark surfaces
A person with blood type A- means their red blood cells contain what antigens?
B antigens
How is a microscope transported
using the arm and base
True or False: Hair found at a crime scene can be very helpful in terms of evidence, but only the hair root contains a person’s DNA and that can help determine a person’s gender
True
True or False: One strand of hair from a person's head will have the same medulla pattern as another strand of hair from the same person's head.
False
What type of fingerprint is the most difficult to collect and analyze?
Latent
The agglutination observed in the lab looked like.....
When looking through a microscope what objective lens should be used first?
x4
While ______ on a corpse may be disgusting to some these critters are a welcome sight to forensic scientists. Insects have proven to be a reliable indicator of an individual’s time of death. There is an entire field of forensic science dedicated to the study of insects in the crime scene – forensic entomology
maggots
What protein makes up hair?
Keratin
What commonly known item can cyanoacrylate
be found in?
super glue
What two terms are used to describe how blood clumps?
Agglutination and Precipitation
What is the full name of the microscope used at IACS
Compound light microscope
For one, it’s easily transferable from one person to another. Two, since it’s something not so obvious (unlike blood), suspects probably won’t wash it off immediately, if it even comes off their bodies at all. And lastly, it’s easy to find with the shine of a flashlight. The likelihood that a crime scene involves _______ is not very likely, but… the more you know.
glitter
The outermost layer of the hair is called the?
Cuticle
What is the safety concern on ninhydrin?
Irritation to the respiratory system
What blood type would not have any agglutination reactions shown in any of its A, B, and Rh wells?
O-
Why must the sample under the microscope be thin
to allow light to pass through
Teeth are bones, and bones last a long time so that’s why teeth are typically used to identify bodies — they are correct around __% of the time
93%