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.

• Seal 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.

• Mark and package the evidence

• Prepare the chain-of-custody record

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