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FSC100 FINAL EXAM – Questions And Correct Answers
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FSC100 FINAL EXAM – Questions And Correct Answers
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FSC100 FINAL EXAM – Questions And Correct AnswersWhat is the importance of the use of DNA analysis? Right Ans - 1. ID
criminals
2. Missing persons
(Especially used in mass disasters)
Forensic biology incorporates the related areas of: Right Ans - 1. Serology
2. Forensic serology
What is serology? Right Ans - Almost exclusively towards the analysis of
blood
What is forensic serology? Right Ans - expands beyond blood to other
biological fluids commonly linked to crime scene work
Serology techniques are used to screen evidence items for what? Right Ans
- The presence and type of body fluid deposition
What do serology analyses target? Right Ans - 1. biochemicals
2. cells
When serology analyses target the biochemicals and cells what do they
define? Give 2 examples. Right Ans - The distinctive functional
characteristics of different body fluids:
1. Spermatoza in semen
2. Hemoglobin in blood
What is the distinctive functional characteristics in semen? Right Ans -
Spermatoza
What is the distinctive functional characteristics in blood? Right Ans -
Hemogloboin
What do serologists seek to do? Right Ans - To identify class evidence such
as human and non-human biological materials
What kind of biological materials do serologists collect? Right Ans - 1.
Blood
,2. Bodily fluids
3. Hair
4. Fibers
Where do serologists collect their class evidence/biological materials?
Right Ans - 1. From individuals directly
2. Items collected from a crime scene
What if we have an indication that someone may be responsible for a crime
where biological fluids were found? What expectation of privacy may a person
have that may limit the collection of the samples and what would be required
to secure those samples : Right Ans - - A warrant would be required since it
is invasive
- Blood, bodily fluid, hair and fibres would be collected
What is the most intrusive biological sample collected from an individual?
Right Ans - Blood
T/F The court cares about the level of intrusiveness to collect biological
samples as a result of a warrant from bodily fluids being found at a crime
scene Right Ans - False - the court does not care about the level of
intrusiveness to collect biological samples as a result of a warrant
If an investigator wants to collect bodily fluids off of someone at a crime scene
but they do not volunteer, recant their offer to participate in the collection
what does the investigator need to do? Right Ans - Get a warrant to ensure
the collection of said bodily fluids
What is deoxyribonucleic acid? Right Ans - DNA
What does DNA stand for? Right Ans - deoxyribonucleic acid
DNA is found in: Right Ans - Every cell with a nucleus
What is DNA profiling derived from? Right Ans - The analysis of this
genetic material for comparative analysis and identification purposes
When are DNA profiles most commonly used? Right Ans - To assist in
identification of an individual
,T/F Largest DNA cases are not criminally related Right Ans - True
What is DNA? Right Ans - genetic information that dictates the form and
development of an organism. It is a molecule
T/F DNA is not a molecule Right Ans - False
DNA is the genetic -------- of life Right Ans - blueprint
What is DNA like structurally? Right Ans - - 2 stranded molecule
- composed of chemical compounds that contain loads of information
How is DNA arranged? Right Ans - - helix
- twisted like a spiral staircase and packed into the nucleus of the cell
What can the structure of DNA be compared to? Right Ans - Spiral Staircase
Why is DNA referred to as latent evidence? Right Ans - - Cannot be seen
with the naked human eye
- Needs specialized equipment in order to be able to see it and enhance it
When people say that they are "swabbing for DNA" what do they mean by
that? Right Ans - They're swabbing another substance in hopes that they
will find DNA but they cannot be sure until they analyze and enhance the
sample
What are the base pairs made up of? Right Ans - Guanine and Cytosine
What are the sugar phosphate backbones made up of? Right Ans - Adenine
and Thymine
Each strand of the helix in DNA is comprised of: Right Ans - Long chains of
nucleotides, that are composed of a phosphate group, a type of sugar called
deoxyribose and one of 4 nitrogen-containing bases
What does ATGC stand for? Right Ans - Adenine, Thymine, Guanine,
Cytosine
, T/F There are hydrogen bonds between the bases of each strand that hold the
double helix together Right Ans - True
Adenine will only bond with nucleotides containing Right Ans - Thymine
Guanine will only bond with nucleotides containing Right Ans - Cytosine
What do the subunits form? Right Ans - Base pairs
What do the strands of DNA form? Right Ans - Codes of proteins
What are codes of proteins? Right Ans - Genes
What do genes provide? Right Ans - genetic information in the organism
such as hair colour, height, and skin colour
How many base pairs are in human DNA? Right Ans - 3 billion
What are structures that carry molecular strands of DNA called? Right Ans
- Chromosomes
How many molecules of DNA are in each chromosome? Right Ans - 1
T/F every species has a characteristic set of chromosomes Right Ans - True
What is one cell's collection of chromosomes called? Right Ans - Genome
Humans inherit a genome of how many chromosomes? Right Ans - 46
Humans inherit a genome of -- chromosomes from each parent Right Ans -
23
How much of the same DNA do we all share? Right Ans - 99.9%
The percentage of DNA that is different between human is the basis for:
Right Ans - fingerprinting and profiling used in medical research, genetics, and
forensic science
What did Rosalind Franklin discover? Right Ans - Structures of DNA
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