Among the following which one is the mutagenic agent ?

Options

A. Visible light
B. Penicillin
C. Formalin
D. Water vapour

Answer

A

Explanation

Visible light is the mutagenic agent. The non-ionising radiations of visible light (UV-rays) have been found to produce mutagens in culture media, which induced mutations in irradiated organisms placed in these media for few hours. These rays cause hydration of cytosine and thymine. In human, it causes DNA damage producing thymine dimers however, generally it does not create any serious problem due to DNA repai system.