Forensic Science Chapter 15 Exam Questions and Correct Answers Already Passed
PCR are regions of a chromosome that contain multiple copies of a core DNA sequence arranged in a
repeating fashion.
T/F - Answers False
Buccal cells are derived from the inner cheek lining.
T/F - Answers True
Blood in soil must be stored in a clean glass or plastic container and immediately frozen.
T/F - Answers True
Small amounts of blood are best submitted to a crime laboratory:
A.
After removal from surface of deposition and rehydration.
B.
After dried.
C.
In a druggists fold.
D.
Immediately while still wet. - Answers B.
After dried.
The separation of STRs using capillary electrophoresis:
A.
Is currently the preferred method.
B.
Decreases analysis time.
C.
Evolved from the flat-gel electrophoresis approach.
D.
,All of the above - Answers D.
All of the above
Which statement regarding STRs is true?
A.
There is little variation in the number of repeats from person to person.
B.
Restriction enzymes are used to cut STRs from the DNA helix.
C.
All humans have the same type of STRs.
D.
Typically a core repeat sequence would consist of 15-30 bases. - Answers C.
All humans have the same type of STRs.
Which is an advantage of working with short DNA fragments?
A.
Their quantity can be greatly amplified by PCR technology.
B.
They are less subject to degradation due to adverse environmental conditions.
C.
They are more stable and less likely to break apart.
D.
All of the above - Answers D.
All of the above
The more STRs a forensic scientist can characterize, the greater is the likelihood that they originated
from two different individuals.
T/F - Answers False
How many different bases are associated with the makeup of DNA?
, A.
6
B.
4
C.
5
D.
3 - Answers B.
4
As currently performed, DNA-profiling technology cannot provide information helpful in:
A.
Determining whether an individual carries a genetic defect.
B.
Matching a suspect to biological evidence found at a crime scene.
C.
Deciding immigration cases based on family relationships.
D.
Settling matters of questioned paternity/maternity. - Answers A.
Determining whether an individual carries a genetic defect.
CODIS is a national system of:
A.
Shared databases of DNA typing information from convicted felons and crime scene evidence.
B.
Crime laboratory directors.
C.
PCR are regions of a chromosome that contain multiple copies of a core DNA sequence arranged in a
repeating fashion.
T/F - Answers False
Buccal cells are derived from the inner cheek lining.
T/F - Answers True
Blood in soil must be stored in a clean glass or plastic container and immediately frozen.
T/F - Answers True
Small amounts of blood are best submitted to a crime laboratory:
A.
After removal from surface of deposition and rehydration.
B.
After dried.
C.
In a druggists fold.
D.
Immediately while still wet. - Answers B.
After dried.
The separation of STRs using capillary electrophoresis:
A.
Is currently the preferred method.
B.
Decreases analysis time.
C.
Evolved from the flat-gel electrophoresis approach.
D.
,All of the above - Answers D.
All of the above
Which statement regarding STRs is true?
A.
There is little variation in the number of repeats from person to person.
B.
Restriction enzymes are used to cut STRs from the DNA helix.
C.
All humans have the same type of STRs.
D.
Typically a core repeat sequence would consist of 15-30 bases. - Answers C.
All humans have the same type of STRs.
Which is an advantage of working with short DNA fragments?
A.
Their quantity can be greatly amplified by PCR technology.
B.
They are less subject to degradation due to adverse environmental conditions.
C.
They are more stable and less likely to break apart.
D.
All of the above - Answers D.
All of the above
The more STRs a forensic scientist can characterize, the greater is the likelihood that they originated
from two different individuals.
T/F - Answers False
How many different bases are associated with the makeup of DNA?
, A.
6
B.
4
C.
5
D.
3 - Answers B.
4
As currently performed, DNA-profiling technology cannot provide information helpful in:
A.
Determining whether an individual carries a genetic defect.
B.
Matching a suspect to biological evidence found at a crime scene.
C.
Deciding immigration cases based on family relationships.
D.
Settling matters of questioned paternity/maternity. - Answers A.
Determining whether an individual carries a genetic defect.
CODIS is a national system of:
A.
Shared databases of DNA typing information from convicted felons and crime scene evidence.
B.
Crime laboratory directors.
C.
