04.07 Module 4 Exam (93%)

Investigators are dusting the crime scene for fingerprints but are only finding partial prints. What amount of points do they need to have to be able to compare these partials to a suspect's prints?
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Investigators are dusting the crime scene for fingerprints but are only finding partial prints. What amount of points do they need to have to be able to compare these partials to a suspect's prints?
8-16 points
True or False. Plastic prints are difficult to identify since they are not visible to the naked eye?
False
Why is mitochondrial DNA easier to collect than nuclear DNA?
Because there are more copies of it in our cells than nuclear DNA
Investigator Benton uses several methods to analyze hair samples found at the crime scene. He examines the physical features of the hairs, their color and shape, as well as the medulla of the hairs. Using the hair root, he tests for nuclear DNA and also for mitochondrial DNA. Which of these tests would most likely indicate the owner's identity?

WRONG
Medulla
Investigators find a hair clasped in the fist of a dead victim. Upon close examination, they realize there is follicular tissue attached to that hair. What could investigators use to prove that the hair in the victim's fist belonged to a specific suspect?
Nuclear DNA
When analyzing a strand of hair, investigators would first try to collect DNA from which general location?
The point closest to the scalp
Investigator Clayton is called to the scene of a crime. A young woman has been murdered in her apartment. Several hairs are found on the victim's jacket, but they do not have follicular tissue or a root attached. Police suspect Travis, the young woman's neighbor, of the crime. Investigators can only try to analyze for mitochondrial DNA. The mitochondrial DNA matches Travis but who else could it match?
Travis's mother, who lives with him
A set of cells that runs through the hair is called a
medulla
Why might an investigator want to collect hairs during a victim's autopsy?
To compare against unknown sample hairs found at the scene
True or False. Scientists studying hair samples can tell how long it has been since someone dyed or bleached their hair.
True
Nuclear DNA can be found in follicular tissue or root attached to a hair sample.TrueInvestigators find a blood spatter than is nearly a perfect circle. The blood most likelydropped to the surface from a 90-degree angleWhich of the following is not considered a blood type?CWhich kind of blood stain develops due to gravity?PassiveTrue or False. A bloody footprint or fingerprint is considered a passive stain.False