In this article we will discuss about: 1. Meaning of Genetic Code 2. Patterns to Genetic Code 3. Properties. Meaning of Genetic Code: It has became obvious that nucleic acids are the genetic material. The nucleic acids being polynucleotide, function to store genetic information's and to replicate. The genetic information flow from polynucleotide to polypeptide. It is surprising to note [...]
The following points highlight the four methods to detect and isolate mutants. The methods are: 1. Replica Plating Technique 2. Resistance Selection Method 3. Substrate Utilization Method 4. Carcinogenicity Test. 1. Replica Plating Technique: Lederberg and Lederberg (1952) have given replica plating technique. This technique is used to detect auxotrophic mutants which differentiates between mutants and wild type strains on [...]
Notani and Setlow (1974) have described the mechanism of bacterial transformation. Moreover, in S. pneumoniae the competent state is transient and persists only for a short period. The competent state is induced by the competence activator protein of molecular weight of 1,000 Dalton. It binds to the plasma membrane of receptor and triggers the synthesis of 10 new proteins within [...]