MCOLES State Licensing Practice Exam

What type of packaging should be used for DNA evidence?

1. Breathable Paper Bag

2. Glass Container

3. Plastic Bag

4. Cardboard Box

The correct answer is: Breathable Paper Bag

Using a breathable paper bag for packaging DNA evidence is important for preserving the integrity of the biological material. Breathable materials allow moisture to evaporate, which helps prevent the growth of mold or bacteria that could degrade the DNA sample over time. This is crucial, as DNA is sensitive to environmental conditions, and maintaining its quality is essential for forensic analysis. In contrast, plastic bags can retain moisture, leading to potential degradation of the DNA sample. They create a sealed environment that may promote bacterial growth, making them less suitable for long-term storage of biological evidence. Glass containers can be used for certain types of evidence, but they are not practical for all biological samples and may pose a risk of breakage. Cardboard boxes may protect the sample effectively but do not offer the breathability that is necessary to ensure the evidence remains uncontaminated and intact. Therefore, the choice of a breathable paper bag is the most appropriate option for this type of evidence.