Question

Why do forensic technicians typically collect blood evidence before picking up weapons and other evidence? Because the Federal Rules of Evidence require that evidence is collected and processed in a certain order. Because blood evidence is affected by environmental conditions. Because blood is messy and it is easier to work with the rest of the evidence once that is cleaned up. Because it is a habit.

Answer 1

2nd one.

Step-by-step explanation:

blood evidence should be tested immediately before effected by the environment to collect dna and calculate blood splatter angles. blood is more reliable than weapons as we cant always prove it was in possession of the offender at the time. if its a ballistic weapon that can be tracked through the serial number the weapon is not first priority. as they are not effected greatly by the environment as bio fluids are.