Question

Mutagens: Chemical mutagens: Nitrous acid: Nucleoside analogs: Benzopyrene: Aflatoxin: Acridine dyes: Radiation: X-rays and gamma rays: Ultraviolet rays:

Answer 1

do Mutagen is a physical or chemical agent that a changes the genetic composition, usually DNA of an organism. It may be harmless or sometimes may cause centain diseases due to lack essential proteine os do desired ones. Nitrous Acid- It is a chemical causing mutation. It deaminate nito Nenous bases and amino. group is replaced by a keto group leading to müsmatch) of DNA. V

Nitrous acid converts Adenine to hypoxanthine, Cyto cine to Veacil & Cuanine is conver sted to xanthine.

Nucleaside Analogs. These are structwally similar to a nucleotida but is chemically different. egia BY Thymine S-bromo- uracil Benzopyrene - It is a chemical produced by internal combustion engines . It itself is not a mutagen. But in lives it is metabolized to diot epoxide which binds covalently to quanine

bases preventing proper pairing with cytoune bases al Da