What is the term for the deliberate linking of DNA from different sources into a single molecule?

The term for the deliberate linking of DNA from different sources into a single molecule is recombinant DNA. This process is a fundamental technique used in molecular biology and biotechnology where DNA molecules that are not normally found together are combined to create genetic combinations that can be studied and utilized for various purposes, such as gene cloning, protein production, or even gene therapy.

Recombinant DNA technology enables researchers to manipulate genetic material, allowing for the introduction of new traits into organisms, providing insights into gene function, and developing biopharmaceuticals. This is achieved through various methods such as restriction enzyme cleavage and ligation, which facilitate the joining of DNA fragments from different origins.

In contrast, gene modification involves altering the existing genes within an organism but does not specifically refer to the creation of a new DNA molecule through combining DNA from multiple sources. Genome sequencing is the process of determining the complete DNA sequence of an organism's genome, which is not focused on combining DNA. The polymerase chain reaction is a technique used to amplify specific DNA segments but does not involve the joining of different DNA sources into a single molecule.