FDC Evidence Collection & Preservation

Question 1

What is the first step in evidence collection?

Accepted Answer

Secure the crime scene

Answer

The first and most critical step in evidence collection is to secure the crime scene. This action prevents unauthorized personnel from entering, minimizes contamination, and ensures that potential evidence is not disturbed, lost, or altered before it can be properly identified and collected.

Question 2

Why is proper packaging important for evidence preservation?

Accepted Answer

Prevent degradation and contamination

Answer

Proper packaging is paramount for evidence preservation as it prevents degradation and contamination of the samples. Appropriate containers protect evidence from environmental factors like moisture, temperature fluctuations, and cross-contamination from other items, thereby maintaining its integrity for accurate analysis.

Question 3

What is chain of custody in evidence handling?

Accepted Answer

Documented evidence control

Answer

Chain of custody in evidence handling refers to the meticulous, documented control of evidence from the moment it is collected until it is presented in court. This unbroken record details every person who handled the evidence, when, and why, ensuring its authenticity and preventing any claims of tampering or contamination.

Question 4

Which material is best for collecting biological evidence?

Accepted Answer

Cotton swabs

Answer

Cotton swabs are generally considered the best material for collecting biological evidence because they are highly absorbent, allowing for efficient collection of samples like blood, saliva, or skin cells. They can also be easily sterilized to prevent contamination and are suitable for drying to preserve DNA.

Question 5

Why should evidence be stored in breathable containers?

Accepted Answer

Prevent mold and degradation

Answer

Evidence should be stored in breathable containers, such as paper bags or envelopes, to allow any residual moisture to evaporate. This crucial step prevents the growth of mold and bacteria, which can rapidly degrade biological evidence and compromise the integrity of DNA samples.

(FDC) Forensic DNA Certification Practice Test

(FDC) Forensic DNA Certification Practice Test

FDC Evidence Collection & Preservation