Forenics

Question 1

What is DNA?

Answer 1

DNA (deoxyribonucleic acid) is the hereditary material in humans and almost all other organisms.

Question 2

True or False: DNA can be found on weapons used in murders.

Answer 2

True

Question 3

What type of evidence can DNA provide in a murder investigation?

Answer 3

DNA can provide biological evidence linking a suspect to the crime scene.

Question 4

Fill in the blank: DNA samples can be collected from __________ on a weapon.

Answer 4

blood, saliva, skin cells

Question 5

What is the primary method used to analyze DNA?

Answer 5

Polymerase Chain Reaction (PCR)

Question 6

Multiple choice: Which of the following is NOT a source of DNA? A) Hair B) Fingerprints C) Blood D) Saliva

Answer 6

B) Fingerprints

Question 7

What is the role of forensic scientists in murder investigations?

Answer 7

Forensic scientists analyze physical evidence, including DNA, to help solve crimes.

Question 8

True or False: DNA evidence can be collected from clothing.

Answer 8

True

Question 9

What is the importance of chain of custody in DNA evidence?

Answer 9

It ensures the integrity and reliability of the evidence collected.

Question 10

Short answer: How can a suspect’s DNA be matched to evidence found at a crime scene?

Answer 10

By comparing the DNA profile obtained from the evidence with the suspect’s DNA profile.

Question 11

Fill in the blank: DNA profiling is also known as __________.

Answer 11

DNA fingerprinting

Question 12

What type of biological material is most commonly used for DNA extraction?

Answer 12

Blood

Question 13

Multiple choice: Which method is typically used to collect DNA from a weapon? A) Swabbing B) Scraping C) Cutting D) All of the above

Answer 13

D) All of the above

Question 14

True or False: Environmental factors can degrade DNA evidence.

Answer 14

True

Question 15

What is mitochondrial DNA and how is it different from nuclear DNA?

Answer 15

Mitochondrial DNA is inherited maternally and is found in mitochondria, while nuclear DNA is inherited from both parents and is found in the nucleus.

Question 16

Short answer: Why is it important to observe a victim in a murder case?

Answer 16

To gather information about the circumstances of the death and potential evidence.

Question 17

Fill in the blank: The process of collecting and analyzing DNA evidence is known as __________.

Answer 17

forensic DNA analysis

Question 18

What are some common locations on a weapon where DNA might be found?

Answer 18

Grip, trigger, blade, or handle

Question 19

Multiple choice: Which of the following can be a source of DNA at a crime scene? A) Blood B) Hair C) Saliva D) All of the above

Answer 19

D) All of the above

Question 20

True or False: DNA evidence can be used to exonerate a wrongfully convicted individual.

Answer 20

True

Question 21

What is the significance of using a control sample in DNA testing?

Answer 21

It helps to validate the results by providing a known reference for comparison.

Question 22

Fill in the blank: Police often use __________ to identify potential suspects based on DNA evidence.

Answer 22

DNA databases

Question 23

Short answer: What role does public awareness play in solving murder cases?

Answer 23

It can encourage witnesses to come forward with information.

Question 24

What is a DNA match probability?

Answer 24

It indicates how likely it is that a DNA sample matches a particular individual.

Question 25

True or False: Only males can provide DNA samples.

Answer 25

False

Question 26

Multiple choice: Which of the following is a limitation of DNA evidence? A) It can be contaminated B) It is always conclusive C) It is cheap to collect D) None of the above

Answer 26

A) It can be contaminated

Question 27

Fill in the blank: DNA evidence is often used in __________ investigations.

Answer 27

homicide

Question 28

What is the purpose of collecting DNA from a suspect?

Answer 28

To determine if it matches DNA found at the crime scene.

Question 29

Short answer: How can a victim's injuries provide clues in a murder investigation?

Answer 29

They can indicate the manner of death and potential struggle.

Question 30

What is the role of an autopsy in a murder investigation?

Answer 30

To determine the cause and manner of death.

Question 31

True or False: DNA can survive in a crime scene for a long time.

Answer 31

True

Question 32

Multiple choice: Which DNA analysis technique is most commonly used in criminal cases? A) STR analysis B) mtDNA analysis C) SNP analysis D) RFLP analysis

Answer 32

A) STR analysis

Question 33

Fill in the blank: DNA evidence is often considered __________ evidence in court.

Answer 33

forensic

Question 34

What is the significance of a victim's last known whereabouts?

Answer 34

It can help establish timelines and identify possible suspects.

Question 35

Short answer: Why is it important to document the crime scene?

Answer 35

To preserve evidence and provide an accurate account of the events.

Question 36

True or False: DNA testing can take days to weeks to produce results.

Answer 36

True