LIFE SCIENCE

Detailed explanation-1: -The plasmid pSC101 was actually the natural plasmid of bacteria Salmonella typhimurium. Therefore, plasmid used to construct the first recombinant DNA was isolated from Salmonella typhimurium.

Detailed explanation-2: -DNA molecules produced by splicing together two or more DNA fragments are called recombinant DNA molecules; they have made possible many new types of cell-biological studies.

Detailed explanation-3: -Recombinant DNA technology involves using enzymes and various laboratory techniques to manipulate and isolate DNA segments of interest. This method can be used to combine (or splice) DNA from different species or to create genes with new functions. The resulting copies are often referred to as recombinant DNA.

Detailed explanation-4: -Recombinant DNA technology is the joining together of DNA molecules from two different species. The recombined DNA molecule is inserted into a host organism to produce new genetic combinations that are of value to science, medicine, agriculture, and industry.