DNA banking is the secure, long term storage of an individual’s genetic material. DNA is most commonly extracted from blood, but can also be obtained from saliva and other tissues. DNA banks allow for conservation of genetic material and comparative analysis of an individual's genetic information. Analyzing an individual's DNA can allow scientists to predict genetic disorders, as used in preventive genetics or gene therapy, and prove that person's identity, as used in the criminal justice system. There are multiple methods for testing and analyzing genetic information including restriction fragment length polymorphism (RFLP) and polymerase chain reactions (PCR).DNA banking is used to conserve genetic material, especially that of organisms that face extinction. This is a more prominent issue today due to deforestation and climate change, which serve as a threat to biodiversity. The genetic information can be stored within lambda phage and plasma vectors. The National Institute of Agro biological Sciences (NIAS) DNA Bank, for example, collects the DNA of agricultural organisms, such as rice and fish, for scientific research. Most DNA provided by DNA banks is used for studies to attempt to develop more productive or more environmentally friendly agricultural species. Some DNA banks also store the DNA of rare or endangered species to ensure their survival. So, here by going through this chapter we can know the DNA banking for plasma converstion role and importance.