Question 1: What is the primary purpose of collecting biological evidence in sexual assault cases?
A) To prove the victim’s credibility
B) To establish the suspect’s motive
C) To identify and link the perpetrator to the crime
D) To determine the victim’s emotional state
Answer: C) To identify and link the perpetrator to the crime
Explanation: Biological evidence, such as DNA samples, bodily fluids, hair, or skin, is crucial in sexual assault cases primarily for identifying and linking the perpetrator to the crime. Here’s a breakdown of the options:
Question 2: In a sexual assault case, what is the significance of preserving the chain of custody for biological evidence?
A) It ensures the victim’s safety during the investigation.
B) It prevents contamination and tampering, maintaining the evidence’s integrity.
C) It helps establish the suspect’s motive.
D) It determines the victim’s emotional state at the time of the assault.
Answer: B) It prevents contamination and tampering, maintaining the evidence’s integrity.
Explanation: Preserving the chain of custody is critical in sexual assault cases to ensure that biological evidence is not contaminated or tampered with. It helps maintain the integrity of the evidence, making it admissible in court and reliable for forensic analysis.
Question 3: What forensic technique is commonly used to analyze biological evidence in sexual assault cases and create DNA profiles?
A) Fingerprint analysis
B) Ballistics analysis
C) DNA profiling
D) Fiber analysis
Answer: C) DNA profiling
Explanation: DNA profiling is the forensic technique commonly used to analyze biological evidence in sexual assault cases. It allows for the creation of DNA profiles, which can be compared to suspects’ DNA to determine whether there is a match.
Question 4: In a sexual assault case, if DNA evidence from the biological sample matches the suspect’s DNA profile, what does this indicate?
A) The victim is not credible.
B) The suspect had a motive to commit the crime.
C) The biological sample likely came from the suspect.
D) The victim’s emotional state at the time of the assault.
Answer: C) The biological sample likely came from the suspect.
Explanation: If DNA evidence from a biological sample matches the suspect’s DNA profile, it indicates that the biological sample likely came from the suspect. This is a strong indication of the suspect’s involvement in the crime.
Question 5: What is the significance of using a rape kit in sexual assault investigations?
A) It helps establish the victim’s emotional state during the assault.
B) It collects and preserves biological evidence from the victim’s body.
C) It determines the suspect’s motive for the assault.
D) It proves the victim’s credibility in court.
Answer: B) It collects and preserves biological evidence from the victim’s body.
Explanation: A rape kit is used to collect and preserve biological evidence from the victim’s body, such as DNA samples, bodily fluids, and other potential evidence. It is crucial for forensic analysis and linking the perpetrator to the crime.
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