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 background level.
Mutagens- Definition, Types (Physical, Chemical, Biological)
2023年8月3日 · A mutagen is a physical or chemical agent that can cause mutations in DNA and raises their frequency above natural background levels. They may directly damage DNA due to their actions, which most frequently leads to replication errors.
Mutagen - National Human Genome Research Institute
2 天之前 · A mutagen is a chemical or physical agent capable of inducing changes in DNA called mutations. Examples of mutagens include tobacco products, radioactive substances, x-rays, ultraviolet radiation and a wide variety of chemicals.
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., cosmic rays, X rays, ultraviolet light) are mutagenic, as are a …
Mutagen - Definition and Examples - Biology Online Dictionary
2022年7月24日 · A mutagen alters the specific pattern and sequence of the nucleic acid bases in the DNA resulting in the change in the protein transcribed from it. Though these changes may be inheritable or non-inheritable depending on their occurrence in somatic cells or germline cells.
Mutagenesis - Wikipedia
A mutagen is a mutation-causing agent, be it chemical or physical, which results in an increased rate of mutations in an organism's genetic code. In nature mutagenesis can lead to cancer and various heritable diseases , and it is also a driving force of evolution .
Mutagen - an overview | ScienceDirect Topics
A mutagen is a physical agent or chemical reagent that causes mutations. For example, nitrous acid reacts with some DNA bases, changing their chemistry and hydrogen bonding properties, and is a mutagen.