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Biology
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Purdue Global
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Homework
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Name: ______________________________
Course and Section: ___________________
Instructor: ___________________________
Choose three pieces of evidence from the list presented and complete the questions in the table
below.
The table should also:
Use APA style for all citations. In-text citations can be placed in the table and a full
reference page located at the end of the assignment template.
Avoid plagiarism. Do not cut and paste directly from the source into the table. Note: no
more than 10% of your paper should be directly quoted from any outside source.
Utilize at least two reliable sources.
Be free of grammar and spelling errors.
Sample 1
Evidence: Chewing
gum
Sample 2
Evidence:
Fingerprint
Sample 3
Evidence: hair
Analyze the evidence
and the physical
properties of the
material. Key
properties such as
color, density,
chemical or biological
composition should
be discussed.
The chewing gum
was white and moist
(Eychner et al., 2016).
Some parts were
green, while others
were white.
Contained proteins,
Urea and Amino
Acids.
It also contained
potassium, phosphate,
and traces of liquid
moisture.
The hair found is
black in color
(Eychner et al., 2016).
The color black is
completely dark. It
was 25 cm in length
Describe how this
evidence was
correctly collected
from the scene.
Trace tape was used
to lift the chewing
gum (Huynh et al.,
2015). It was put in a
clean transparent
paper, which was then
sealed and taped in all
corners.
A wine glass found
on the dining table
was carefully dusted
while wearing gloves
(Eychner et al., 2016).
Trace tape was used
to lift the hair (Huynh
et al., 2015). It was
put in a clean
transparent paper,
which was then
sealed and taped in all
corners.

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Necessary tests to be
performed on this
type of sample.
The presence of
calcium and also tests
of phosphate are
done. Photographic
image to determine
the teeth orientation.
The blood type on the
traces of saliva.
Print's ridges
including width, the
fingerprints curvature,
and its line
orientation
Hair microscopy was
done to determine if it
contains the hair root.
Short Tandem repeat
done to determine the
DNA Composition
Hypothetical results
recorded. Imagine
that the results came
back from the lab.
Describe what type of
results you would
expect for each piece
of evidence. You may
have to be creative
and decide if the lab
testing reveals more
about the crime or the
criminal or not.
The results showed
that there was a trace
of blood type AB.
The fingerprint were
consistent with those
dusted from the wine
glass in the dining
area.
the results of the
tested DNA from the
hair matched the DNA
of a man who was
previously paroled in
a nearby village
Apply the
hypothetical results
from the evidence
collected to the
investigation and
include discussion
about how the results
could influence a
decision in a trial
setting.
The main suspects
will have their blood
test conducted. The
results will then be
compared with the
test results from the
chewing gum sample.
If the blood type
matches, the suspect
will then be
implicated in the
crime scene.
The fingerprints taken
from the suspected
man matched 100%
with the prints taken.
After questioning, the
suspect also revealed
that he had driven
nearby the crime
scene which increased
the certainty that he
was involved in the
crime
The crime scene
evidence did not
match the suspect's
hair samples.
References:
1. Batista, B., Rodrigues, J., de Oliveira Souza, V., & Barbosa, F. (2009). A fast ultrasound-
assisted extraction procedure for trace elements determination in hair samples by ICP-MS
for forensic analysis. Forensic Science International, 192(1-3), 88-93.
https://doi.org/10.1016/j.forsciint.2009.08.003

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Name: ______________________________ Course and Section: ___________________ Instructor: ___________________________ Choose three pieces of evidence from the list presented and complete the questions in the table below. The table should also: • Use APA style for all citations. In-text citations can be placed in the table and a full reference page located at the end of the assignment template. • Avoid plagiarism. Do not cut and paste directly from the source into the table. Note: no more than 10% of your paper should be directly quoted from any outside source. • Utilize at least two reliable sources. • Be free of grammar and spelling errors. Sample 1 Evidence: Chewing gum Sample 2 Evidence: Fingerprint Sample 3 Evidence: hair Analyze the evidence and the physical properties of the material. Key properties such as color, density, chemical or biological composition should ...
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