Individual vs Class Worksheet

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Name: _________________________________________________ Date: _________________________

Individual vs. Class Characteristics

  Individual Characteristics: Evidence that can be attributed to a single source (e.g., fingerprints, DNA). Class Characteristics: Evidence that can be correlated only to a group.

Part A Description

1. Brown hair

Individual or Class?

2. Tire tread marks 3. DNA extracted from red hair 4. Fitting together broken pieces of a glass bottle 4. Blood typing (Blood type A, B, AB) 5. Fibers 6. Shoe impression (worn down shoe) 7. Handwriting characteristics

Part B

Decide if the evidence is individual or class evidence and explain why it belongs to this group. 1.

Some blond hairs were found on the gloves of a suspected kidnapper who has brown hair. Would they be considered class or individual evidence? Class Individual EXPLAIN: _______________________________________________________________________ 2.

If a restaurant receipt was found torn into four pieces, would the pieces be class or individual evidence? Class EXPLAIN: Individual _____________________________________________________________________ 3.

A piece of duct tape was taken from a victim of a B & E (breaking and entering). A roll of the same brand of duct tape was found at the suspect’s home. Would this be considered class or individual evidence? Class EXPLAIN: Individual

_________________________________________________________

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