Question

A transgene is introduced in a plant to achieve

• A. The synthesis of protein, which is required
• B. Modification of existing pathway
• C. Both A and B
• D. Preventing expression of existing gene

Answer 1

Answer: (C)

Both A and B

A transgene is a gene or genetic material that has been transferred naturally or by any of a number of genetic engineering techniques from one organism to another. The introduction of a transgene has the potential to change the phenotype of an organism.

The inserted genes, called as transgenes, when they are inserted into the new host plant, may come from another plant of the same or a different species or a completely unrelated kind of organism like bacteria or animals.

For example- Bt corn varieties contain a gene from a bacterium (Bacillus thuringiensis) found in the soil that causes the transgenic corn to produce an insecticidal protein. The gene being transferred may have its genetic code altered to modify its function, in addition to having different regulatory sequences spliced on to control how it is expressed (switched on or off) in the plant.

Thus, the correct answer is option C.