In this article we will discuss about:- 1. Origin of Spontaneous Mutations 2. Evidence for Spontaneous Mutation 3. Random Nature 4. Mutation Rates. Origin of Spontaneous Mutations: Mutation involves changes in DNA. Several mechanisms are known that bring about alterations in DNA. These modifications may arise from error in DNA replication, damage to DNA from radiation. Errors occur during replication [...]
In this article we will discuss about:- 1. Definition of Mutation 2. History of Mutation 3. Aniridia in Man 4. Detection 5. Types. Contents: Definition of Mutation History of Mutation Aniridia in Man as a Case of Mutation Detection of Mutation Types of Mutation 1. Definition of Mutation: Heredity results accurate reproduction of genes. During cell-division the chromosomes divide to [...]
The following points highlight the eight important types of microbial mutants. The types are: 1. Auxotrophic Mutants 2. Resistant Mutants 3. Cryptic Mutants 4. Conditionally Expressed Mutants 5. Antigenic Mutants 6. Metabolic Mutants 7. Regulatory Mutants 8. Temperature-Sensitive Mutants. Microbial Mutant: Type # 1. Auxotrophic Mutants: Auxotrophic mutants are those that are nutritionally deficient, i.e., they are unable to synthesize [...]