Evidence Collection

What process must investigators follow when collecting evidence and packing evidence at a crime scene?

• The scientific method

• chain of custody

• locard's principle

A victim's fingernail scrapings would be correctly packaged in:

• a druggist fold

• sealed, airtight containers.

• a plastic Ziploc® bag.

• Paper evidence bag

A clear, well-documented chain of custody should be established through a process that includes the following in order.

• Prepare the chain-of-custody record

• Seal the evidence

• Mark and package the evidence

• Take notes, document recovery location, time and date recovered or received, description of item, condition of item and any unusual markings on or alterations to item.

Answer explanation

Check out this website for more info about evidence collection

https://projects.nfstc.org/property_crimes/module03/pro_m03_t17.htm

What is the purpose of chain of custody in evidence collection?

• To establish and maintain the integrity and authenticity of the evidence.

• To expedite the process of evidence collection.

• To prevent tampering or contamination of the evidence.

• To ensure the evidence is admissible in court.

Which of the following is a method used for collecting DNA evidence?

• Swabbing

• Fingerprinting

• Interviewing

• Photographing

How should a shirt with biological evidence on it such as a blood drop be packaged?

• it should be packaged in paper to allow for drying

• it should be packaged in plastic immediately

• it should be packaged in the same container as other evidence

What is the purpose of using a paper bag for storing DNA evidence?

• To prevent moisture buildup

• To save space

• To reduce weight

• To enhance visibility

Which of the following is a potential source of contamination when collecting DNA evidence?

• Using new gloves

• Breathing over the evidence

• Using sterile swabs

• Wearing a face mask

What is the primary reason for using sterile tools when collecting DNA evidence?

• To save time

• To avoid contamination

• To reduce costs

• To increase efficiency

What is the primary purpose of evidence collection in scientific research?

• To ensure data integrity and reliability

• To speed up the research process

• To reduce research costs

• To simplify data analysis

Tags

NGSS.HS-PS2-5