Question

Describe the basic steps of Recombinant DNA Technology.

Hint:

Recombinant DNA Technology combines genes and vectors using restriction enzymes and ligase, followed by transformation and selection in host cells.

Answer 1

The process of Recombinant DNA Technology entails merging DNA segments from disparate origins to generate novel genetic constructs. The fundamental stages are enumerated as follows:

1. DNA Isolation: The target gene from the donor organism and the vector DNA (typically a plasmid) are extracted.
2. DNA Cutting: Restriction enzymes (restriction endonucleases) are employed to cleave both the gene and the vector DNA at precise recognition sites, yielding complementary ends.
3. DNA Ligation: The gene and vector DNA fragments are covalently linked by the enzyme DNA ligase, forming a recombinant DNA molecule.
4. Transformation: The recombinant DNA is introduced into an appropriate host cell, such as E. coli, via the process of transformation.
5. Selection: Host cells are cultured on selective media to identify those that have successfully incorporated the recombinant DNA.
6. Screening: The presence and functional expression of the introduced gene within the transformed cells are verified.

This technological approach facilitates the creation of genetically modified organisms, therapeutic proteins, and vaccines.