A mutagen is an agent that causes mutations in the DNA of organisms. Mutagens can be physical agents, such as radiation (like X-rays or ultraviolet light), or chemical agents, such as certain pollutants or substances used in industrial processes. Biological agents, such as some viruses, can also be considered mutagens. Mutagens typically induce changes in the genetic material, which can lead to various effects, including cancer, hereditary diseases, and other genetic disorders.
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