Mutagens cause changes in the DNA sequence, which can lead to mutations. While some mutations can be harmful, not all mutations lead to negative outcomes such as cancer, birth defects, or death. Some mutations may be neutral or even beneficial. Additionally, the level of harm caused by mutagens can vary depending on the dose and exposure.

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Mutagens

Question 39

Multiple Choice

Mutagens

A) are fatal to humans in low doses.
B) cause birth defects.
C) are harmful because they are flammable, explosive, and irritating to skin or lungs, or because they cause allergic reactions.
D) cause mutations in cell DNA.
E) always cause cancer.

Correct Answer: