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  1. Mutagen - Wikipedia

    In genetics, a mutagen is a physical or chemical agent that permanently changes genetic material, usually DNA, in an organism and thus increases the frequency of mutations above the natural …

  2. Mutagen - National Human Genome Research Institute

    1 day ago · A mutagen is a chemical or physical phenomenon, such as ionizing radiation, that promotes errors in DNA replication.

  3. MUTAGEN Definition & Meaning - Merriam-Webster

    The meaning of MUTAGEN is an agent (such as a chemical or various radiations) that tends to increase the frequency or extent of mutation.

  4. Mutagens- Definition, Types (Physical, Chemical, Biological)

    Aug 3, 2023 · A mutagen is a physical or chemical agent that can cause mutations in DNA and raises their frequency above natural background levels.

  5. Mutagen | DNA damage, genetic mutations, carcinogens | Britannica

    mutagen, any agent capable of altering the genetic constitution of a cell by changing the structure of the hereditary material, deoxyribonucleic acid (DNA). Many forms of electromagnetic radiation (e.g., …

  6. What Is a Mutagen? Definition, Types, and Effects

    Aug 16, 2025 · A mutagen is an agent that causes mutations in an organism’s genetic material, typically DNA or RNA. These alterations can affect the sequence or structure of DNA, increasing the …

  7. Mutagen - an overview | ScienceDirect Topics

    A mutagen is an agent that can damage DNA, leading to permanent changes in the DNA sequence due to the incorporation of damaged nucleotides during DNA replication.

  8. Mutagen - Definition and Examples - Biology Online Dictionary

    Jul 24, 2022 · Mutagen (biology definition): Any agent (physical or environmental) that can induce a genetic mutation or can increase the rate of mutation.

  9. MUTAGEN Definition & Meaning | Dictionary.com

    MUTAGEN definition: a substance or preparation capable of inducing mutation. See examples of mutagen used in a sentence.

  10. Definition of mutagen - NCI Dictionary of Cancer Terms

    mutagen (MYOO-tuh-jen) Anything that causes a mutation (a change in the DNA of a cell). DNA changes caused by mutagens may harm cells and cause certain diseases, such as cancer. …