Which statement about packaging for DNA evidence is correct?

Which statement about packaging for DNA evidence is correct?

• A. Packaging color helps determine evidence type
• B. Moisture-retaining plastic is ideal for preserving DNA
• C. Moisture-retaining plastic should be avoided because it can foster DNA degradation
• D. Paper packaging is never used for DNA evidence

Answer: (C)

Moisture control is key to preserving DNA evidence. DNA is vulnerable to degradation in the presence of moisture, heat, and microbial activity. Packaging that traps moisture creates a humid, warm microenvironment where enzymes and organisms can break down DNA, or contaminate the sample. That’s why moisture-retaining plastic should be avoided. Paper packaging, on the other hand, is breathable and helps moisture escape, reducing the risk of hydrolytic damage and microbial growth. The color of the packaging and the idea that paper is never used aren’t the factors here, and in practice paper packaging is indeed commonly used for DNA evidence.

Moisture control is key to preserving DNA evidence. DNA is vulnerable to degradation in the presence of moisture, heat, and microbial activity. Packaging that traps moisture creates a humid, warm microenvironment where enzymes and organisms can break down DNA, or contaminate the sample. That’s why moisture-retaining plastic should be avoided. Paper packaging, on the other hand, is breathable and helps moisture escape, reducing the risk of hydrolytic damage and microbial growth. The color of the packaging and the idea that paper is never used aren’t the factors here, and in practice paper packaging is indeed commonly used for DNA evidence.