In this article we will discuss about the definition and mechanisms of DNA repair. Definition of DNA Repair: One of the main objectives of biological system is to maintain base sequences of DNA from one generation to the other. Changes in DNA sequence arise during replication of DNA damage by chemical mutagens and radiation. During […]
DNA Repair: Definition and Mechanisms | Genetics
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Spontaneous Mutation: Origin, Nature and Rates | Genetics
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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 […]
Expression of Mutations | Genetics
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In this article we discuss about the expression of mutations. The expression of mutation can be observed only when there occurs a detectable and altered phenotype. If a mutation occurs from a most prevalent wild type to a mutant form, it is called forward mutation. In forward mutation, a second mutation may take place resulting […]
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