Question 1

The individuality of an organism is determined by the organism's:

Accepted Answer

A)   DNA nucleotide sequence.
B)   Nitrogenous bases.
C)   Amino acids.
D)   Environment.E) C) and D)
F) All of the above

Question 2

Which statement is NOT true? Few forensic labs do analysis of mtDNA because:

Accepted Answer

A)   Little mtDNA is present in a cell.
B)   The analysis procedure is very rigorous.
C)   It costs much more than nuclear DNA profiling.
D)   Such study takes a long time.E) None of the above
F) B) and C)

Question 3

________ repeats are regions of a chromosome that contain multiple copies of a core DNA sequence arranged in a repeating fashion.

Accepted Answer

The answer of ________ repeats are regions of a chromosome...

Question 4

The Y-STR gene can reveal the sex of the person who contributed a DNA sample.

Accepted Answer

A) True 
 B)False

Question 5

A typical STR DNA type emanating from a single individual shows a ________ band pattern.

Accepted Answer

A)   One
B)   Two
C)   Three
D)   ZeroE) A) and C)
F) None of the above B

Question 6

The molecular structure of DNA was deduced by:

Accepted Answer

A)   Gregor Mendel.
B)   Francis Crick.
C)   James Watson.
D)   Both B and CE) All of the above
F) C) and D)

Question 7

Which statement is not correct for Y-STRs?

Accepted Answer

A)   Female STRs will not yield a Y-STR profile.
B)   Y-STRs can be amplified by PCR.
C)   Y-STR types are typically shorter in length as compared to X-STRs.
D)   A typical Y-STR pattern has one band.E) A) and B)
F) A) and C)

Question 8

Describe the process of DNA replication.What is the importance of DNA replication?

Accepted Answer

Answer (should include points such as):
DNA replication begins with the unwinding of the DNA strands in the double helix.Each strand is then exposed to a collection of free nucleotides.The double helix is re-created as the nucleotides are assembled in the proper order (A with T and G with C).The result is the emergence of two identical copies of DNA.DNA replication allows a cell to pass on its genetic identity when it divides.

Question 9

The technology of DNA typing had its beginnings in 1985 with the work of:

Accepted Answer

A)   Henry Lee.
B)   Francis Crick.
C)   James Watson.
D)   Alec Jeffreys.E) A) and B)
F) A) and C)

Question 10

A ________ is a threadlike structure in the cell nucleus along which the genes are located.

Accepted Answer

The answer of A ________ is a threadlike structure in...

Question 11

Which of the following depicts correct base-pairing in DNA?

Accepted Answer

A)   A-U
B)   G-A
C)   T-A
D)   C-TE) A) and B)
F) A) and C) C

Question 12

Which is an advantage of working with short DNA fragments?

Accepted Answer

A)   They are more stable and less likely to break apart.
B)   Their quantity can be greatly amplified by PCR technology.
C)   They are less subject to degradation due to adverse environmental conditions.
D)   All of the aboveE) None of the above
F) A) and B)

Question 13

How should blood-containing clothes from a victim be packaged?

Accepted Answer

A)   In an airtight metal container
B)   In an airtight clear plastic container
C)   In a metal paint can
D)   In breathable paper after blood has driedE) B) and D)
F) A) and B)

Question 14

Which statement about tandem repeats is NOT true?

Accepted Answer

A)   More than 30% of the human genome is composed of these repeating units.
B)   Their origin is a mystery.
C)   It is thought that they may act as spacers between the coded regions of DNA.
D)   They are of no forensic interest.E) A) and B)
F) A) and C)

Question 15

PCR is a technique that:

Accepted Answer

A)   Provides a statistical analysis of the nitrogenous-base pairings.
B)   Can produce many exact copies of segments of DNA.
C)   Produces information regarding the sequence of nitrogenous bases.
D)   Virtually eliminates operator error from DNA analysis.E) A) and B)
F) A) and D)

Question 16

Which of the following statements about mitochondrial DNA is incorrect?

Accepted Answer

A)   Mitochondrial DNA is located outside the cell's nucleus.
B)   Mitochondrial DNA is constructed in a loop configuration.
C)   Many copies of mitochondrial DNA's hypervariable regions are made by PCR.
D)   The number of repeat segments found in the hypervariable regions are used to type mitochondrialnDNA.E) A) and D)
F) A) and C)

Question 17

________ is the molecule that carries the body's genetic information.

Accepted Answer

The answer of ________ is the molecule that carries the...

Question 18

________ is the process of joining two complementary strands of DNA to form a double-stranded molecule.

Accepted Answer

The answer of ________ is the process of joining two...

Question 19

________ region(s) of mitochondrial DNA have been found to be highly variable in the human population for forensic determinations.

Accepted Answer

A)   One
B)   Two
C)   Three
D)   FourE) B) and C)
F) A) and D)

Question 20

The separation of STRs using capillary electrophoresis:

Accepted Answer

A)   Evolved from the flat-gel electrophoresis approach.
B)   Decreases analysis time.
C)   Is currently the preferred method.
D)   All of the aboveE) C) and D)
F) A) and C)

Exam 16: DNA: the Indispensable Forensic Science Tool

The individuality of an organism is determined by the organism's:

Correct Answer
verified

Which statement is NOT true? Few forensic labs do analysis of mtDNA because:

Correct Answer
verified

________ repeats are regions of a chromosome that contain multiple copies of a core DNA sequence arranged in a repeating fashion.

Correct Answer
verified

The Y-STR gene can reveal the sex of the person who contributed a DNA sample.

Correct Answer
verified

A typical STR DNA type emanating from a single individual shows a ________ band pattern.

Correct Answer
verified
B

The molecular structure of DNA was deduced by:

Correct Answer
verified

Which statement is not correct for Y-STRs?

Correct Answer
verified

Describe the process of DNA replication.What is the importance of DNA replication?

The technology of DNA typing had its beginnings in 1985 with the work of:

Correct Answer
verified

A ________ is a threadlike structure in the cell nucleus along which the genes are located.

Correct Answer
verified

Which of the following depicts correct base-pairing in DNA?

Correct Answer
verified
C

Which is an advantage of working with short DNA fragments?

Correct Answer
verified

How should blood-containing clothes from a victim be packaged?

Correct Answer
verified

Which statement about tandem repeats is NOT true?

Correct Answer
verified

PCR is a technique that:

Correct Answer
verified

Which of the following statements about mitochondrial DNA is incorrect?

Correct Answer
verified

________ is the molecule that carries the body's genetic information.

Correct Answer
verified

________ is the process of joining two complementary strands of DNA to form a double-stranded molecule.

Correct Answer
verified

________ region(s) of mitochondrial DNA have been found to be highly variable in the human population for forensic determinations.

Correct Answer
verified

The separation of STRs using capillary electrophoresis:

Correct Answer
verified

Exam 16: DNA: the Indispensable Forensic Science Tool

The individuality of an organism is determined by the organism's:

Correct AnswerverifiedShow Answer

Which statement is NOT true? Few forensic labs do analysis of mtDNA because:

Correct AnswerverifiedShow Answer

________ repeats are regions of a chromosome that contain multiple copies of a core DNA sequence arranged in a repeating fashion.

Correct AnswerverifiedShow Answer

The Y-STR gene can reveal the sex of the person who contributed a DNA sample.

Correct AnswerverifiedShow Answer

A typical STR DNA type emanating from a single individual shows a ________ band pattern.

Correct AnswerverifiedB

The molecular structure of DNA was deduced by:

Correct AnswerverifiedShow Answer

Which statement is not correct for Y-STRs?

Correct AnswerverifiedShow Answer

Describe the process of DNA replication.What is the importance of DNA replication?

The technology of DNA typing had its beginnings in 1985 with the work of:

Correct AnswerverifiedShow Answer

A ________ is a threadlike structure in the cell nucleus along which the genes are located.

Correct AnswerverifiedShow Answer

Which of the following depicts correct base-pairing in DNA?

Correct AnswerverifiedC

Which is an advantage of working with short DNA fragments?

Correct AnswerverifiedShow Answer

How should blood-containing clothes from a victim be packaged?

Correct AnswerverifiedShow Answer

Which statement about tandem repeats is NOT true?

Correct AnswerverifiedShow Answer

PCR is a technique that:

Correct AnswerverifiedShow Answer

Which of the following statements about mitochondrial DNA is incorrect?

Correct AnswerverifiedShow Answer

________ is the molecule that carries the body's genetic information.

Correct AnswerverifiedShow Answer

________ is the process of joining two complementary strands of DNA to form a double-stranded molecule.

Correct AnswerverifiedShow Answer

________ region(s) of mitochondrial DNA have been found to be highly variable in the human population for forensic determinations.

Correct AnswerverifiedShow Answer

The separation of STRs using capillary electrophoresis:

Correct AnswerverifiedShow Answer

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B

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C

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