Mutagen
A mutagen is a substance or a process that changes the genetic material of an organism. Mutagens also increase the number of mutations that occur. Many mutagens also cause cancer, so they are also carcinogens. Examples of mutagens are ionizing radiation, many bromine compounds, benzene. A test to detect mutagens is the Ames test.
Mutagen Media
The international pictogram for chemicals that are sensitising, mutagenic, carcinogenic or toxic to reproduction
A DNA adduct (at center) of the mutagenic metabolite of benzo[a]pyrene from tobacco smoke