In this article we will discuss about: 1. Introduction to Ionising Radiation 2. Measuring Ionising Radiation 3. Effects. Introduction to Ionising Radiation: Due to their shorter wavelength, X-rays and gamma rays penetrate tissues deeper than visible and UV light. They can impart enough localised energy to absorbing tissue to ionize atoms and molecules. When a highly energetic wave moving at [...]
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 termination codons that do not [...]
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 to one of the four [...]