What is a primary drawback of trace evidence?

Study for the Evidence Technician Exam. Use flashcards and multiple choice questions with hints and explanations. Prepare effectively for your exam!

The primary drawback of trace evidence is that it typically has only class characteristics. This means that trace evidence, such as fibers, hair, or paint, can often be linked to a group but not to an individual source. Class characteristics indicate properties that are common to a certain group but lack the specificity needed to conclusively identify a single item or individual, which can limit its probative value in criminal investigations.

While trace evidence can still play a crucial role in supporting a case by linking suspects or scenes, the reliance on class characteristics alone may reduce its ability to point to a unique origin, thus making it less effective in some situations when compared to types of evidence that have individualized characteristics. This inherent limitation can challenge investigators in establishing a direct connection between the evidence and a suspect or the crime itself, which is why class characteristics represent a notable drawback in the context of trace evidence.

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