In this article we will discuss about the history and induction of mutations. History of Mutation: The sudden heritable changes in genes, other than those due to Mendelian segregation and recombination constitute mutations. The idea of mutation first originated from observations of a Dutch botanist Hugo de Vries (in the 1880’s) on variations in plants […]
Mutations: History and Induction | Genetics
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Types of Point Mutation | Genetics
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The following points highlight the three types of point mutation. The types are: 1. Non-Sense Mutations 2. Missense Mutation 3. Silent Mutation. Type # 1. Non-Sense Mutations: Non-sense mutation is one type of point mutation. There are 64 codons that code for amino acid out of which three codons (UAA, UAG, UGA) are known as […]
Types of Mutagens: Chemical and Physical | Genetics
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In this article we will discuss about the chemical and physical types of mutagens. 1. Chemical Mutagens: Singer and Kusmierek (1982) have published an excellent review on chemical mutagenesis. Some of the chemical mutagens and mutagenesis are given in Table 9.3, and described below: i. Base Analogues: A base analogue is a chemical compound similar […]
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