Question

Bloodstains and hairs are known as what kind of evidence at a crime scene?
A.
rough
B.
impression
C.
video
D.
biological

Answer 1

D. biological

Answer 2

Why is blood found at a crime scene often allowed to dry before taking a sample?
A.
DNA can only be tested from a dry sample.
B.
It’s too messy.
C.
Wet blood samples can degrade.
D.
It’s faster.

Answer 3

C. Wet blood samples can degrade.