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Question

The ability to construct recombinant DNA molecules and maintain them in cells is called _________.

This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
Cloning

Understanding DNA Molecule Construction

The question asks for the term describing the process of creating recombinant DNA molecules and ensuring their propagation within host cells.

Defining Key Biological Processes

Let's examine the options in the context of molecular biology:

  • Libraries: These are collections of DNA fragments, often representing an organism's entire genome, stored in vectors. They are a result of processes, not the process itself.
  • Cloning: This term specifically refers to the process of producing identical copies of a DNA molecule. It inherently involves constructing a recombinant DNA molecule (often by inserting a gene of interest into a vector like a plasmid) and then replicating this molecule within a host organism (like bacteria), effectively maintaining it in cells.
  • Plasmids: These are small, circular DNA molecules found naturally in bacteria and some other organisms. While crucial tools used in cloning, they are not the process itself.
  • Fusion: This generally refers to the joining or merging of different entities. While DNA fragments can be fused, "fusion" doesn't encompass the entire process of creating and maintaining recombinant DNA in cells.

Identifying the Correct Term

Based on the definitions, the ability to construct recombinant DNA molecules and maintain them in cells is accurately described as Cloning.

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