What outcome is expected from gene therapy?

• A. To produce more insulin
• B. To correct defective genes
• C. To create new species
• D. To enhance natural mutations

Answer: (B)

Gene therapy primarily aims to correct defective genes that are responsible for disease development. By addressing the underlying genetic issues, gene therapy seeks to provide a long-term solution for genetic disorders, rather than merely alleviating symptoms. This process typically involves introducing a healthy copy of a gene, repairing a mutated gene, or even replacing a missing gene within a patient's cells.

The focus on correcting defective genes distinguishes gene therapy from other biotechnology applications, such as producing more insulin, which is a specific outcome of certain treatments but does not encompass the broader objective of gene therapy. Similarly, creating new species or enhancing natural mutations does not align with the therapeutic intent of gene therapy, which is primarily concerned with restoring normal function to genetic material in individuals suffering from genetic diseases. Therefore, the most accurate representation of the expected outcome from gene therapy is the correction of defective genes.