The following points highlight the three main stages for mechanism of induced mutagenesis. The stages are: 1. Base Analogue Incorporation 2. Base Alteration 3. Distortion of DNA. Stage # 1. Base Analogue Incorporation: Some chemical compounds are sufficiently similar to the nitrogen bases of DNA so that they occasionally are incorporated into DNA in place of normal bases, such compounds [...]
In this notes we will discuss about Mutation:- 1. Meaning of Mutation 2. Historical Account of Mutation 3. Characteristics 4. Types. Notes # Meaning of Mutation: The offsprings resemble their parents in one or several respects, yet there are differences between the two. These differences, whether large or small, are called variations. Some of the variations may be induced by [...]
The following points highlight the five chief agents which bring about mutation in organisms. The agents are: 1. Induction of Mutation by Ionizing Radiations 2. Non-Ionizing Radiations 3. Heat and Temperature 4. Mustard Gas 5. Chemical Mutagens. Agent # 1. Induction of Mutation by Ionizing Radiations: X-ray is representative of ionizing radiations- a group including alpha, beta and gamma radiation [...]