Question

In genetic engineering the Foreign DNA is called

• A. Recombinant DNA
• B. Exogenous DNA
• C. Mutated DNA
• D. Transferred DNA

Hint:

Recombinant DNA technology is crucial for genetic modification, where the foreign DNA is inserted into the host organism to express desired traits.

Answer 1

The Correct Option is A

In genetic engineering, the foreign DNA is called recombinant DNA or sometimes transgenic DNA.

Explanation:

• Recombinant DNA: This is the DNA that has been artificially created by combining DNA from different sources. It involves the insertion of foreign DNA (from a different organism) into the genome of a host organism. This recombinant DNA can be used for various purposes, such as producing genetically modified organisms (GMOs) or for therapeutic applications.
• Transgenic DNA: When foreign DNA is introduced into a living organism's genome, the organism is referred to as a transgenic organism, and the inserted DNA is referred to as transgenic DNA. This term is often used when the foreign DNA comes from a different species.

Process of Genetic Engineering:

• Foreign DNA is first isolated from its source organism and then inserted into a vector, which can be a plasmid, virus, or another carrier molecule.
• This recombinant DNA is then introduced into a host cell, where it may integrate into the host's genome or exist as an extrachromosomal element.
• The host organism may then express the new genetic material, leading to the production of new proteins or traits.

Recombinant DNA technology is used in various fields, including medicine (for producing insulin, vaccines), agriculture (for creating pest-resistant crops), and biotechnology (for gene therapy and other applications).