The following points highlight the five main enzymes that are to be used in DNA. The enzymes are: 1. Phosphatases 2. Taq Polymerase 3. Nucleases 4. Reverse Transcriptase 5. DNA Ligating Enzyme. Enzyme # 1. Phosphatases: Phosphatases (Alkaline) are glycoproteins with two identical subunits that hydrolytically remove phosphate groups from DNA molecule. Alkaline phosphatases are used to reduce unfeasible ligation [...]
Several possible mechanisms are responsible for the origin of somaclonal variation. Number of processes can operate simultaneously in one culture. The mechanisms are: 1. Karyotypic Change 2. Chromosomal Rearrangement 3. Nucleotide Pool Imbalance 4. Cryptic Transposable Elements 5. Gene Amplification 6. Somatic Gene Rearrangement 7. Somatic Crossing Over. Mechanism # 1. Karyotypic Change: Several plants alter their chromosome number in [...]
Blotting technique is an extremely powerful tool for analyzing gene structure and used to study gene expression, once cloned cDNA is isolated. There are three important types of blotting techniques are: 1. Southern Blotting 2. Northern Blotting 3. Western Blotting. Technique # 1. Southern Blotting: Developed by E.M. Southern, the technique of Southern blotting is one of the most important [...]