Human tissue or fluid is classified as which type of evidence?

• A. Chemical evidence
• B. Trace evidence
• C. Firearm evidence
• D. Biological evidence

Answer: (D)

Biological evidence consists of materials from living organisms and is analyzed to obtain information like DNA. Human tissue or bodily fluid fits this category because it originates from a person and can be used to identify individuals or establish biological connections in a case. This is distinct from chemical evidence (substances such as drugs or chemicals), trace evidence (tiny materials like fibers or soil), or firearm evidence (components or residues related to firearms). Proper collection and handling of biological evidence is crucial to preserve DNA integrity and maintain the chain of custody.