Gene cloning is the process in which a gene of interest is located and copied (cloned) out of DNA extracted from an organism? When DNA is extracted from an organism, all of its genes are extracted at one time. This DNA, which contains thousands of different genes.
The step following DNA extraction of an organism is the construction of a library to organize the DNA. A gene library can be defined as a collection of living bacteria colonies that have been transformed with different pieces of DNA from the organism that is the source of the gene of interest. If a library is to have a colony of bacteria for every gene, it will consist of tens of thousands of colonies or clones.