The following points highlight the three main types of bonds in DNA replication. The types are: 1. Covalent and Ionic Bonds 2. Hydrogen Bonds 3. Weak Chemical Bonds. Type # 1. Covalent and Ionic Bonds: Atoms can attain a more stable arrangement of electrons in their outermost shell by interacting with one another. An ionic bond results from transfer of [...]
The following points highlight the six main types of enzymes that are associated with enzymes and some of them plays a key role in replication. The types are: 1. The Nucleases 2. The Ligases 3. Restriction Enzymes 4. The Polymerases 5. The Swivelases 6. Unwinding Enzymes and Proteins. Type # 1. The Nucleases: Enzymes which catalyse the breakdown of particular [...]
The work of J. Cairns demonstrated DNA replication in bacteria in an elegant way. He used high resolution autoradiography for observing the distribution of radioactive label in the "chromosomes" of dividing E. coli cells. The bacterial cells were grown on a medium containing tritiated thymidine. The labelled DNA was extracted from the cells and spread on EM grids. A very [...]