Which medical technique involves inserting normal genes into human cells to correct genetic disorders?

Which medical technique involves inserting normal genes into human cells to correct genetic disorders?

• A. Genome editing
• B. Gene therapy
• C. Selective breeding
• D. Hybridization

Answer: (B)

In gene therapy, doctors introduce normal copies of genes into a patient’s cells to replace or compensate for faulty ones that cause disease. This helps the body produce the missing or defective protein again, aiming to treat or prevent the genetic disorder. The new gene is typically delivered into cells using a delivery method, such as a harmless virus, so the corrected cells can function normally. This differs from genome editing, which directly changes the existing DNA sequence at a specific location to fix mutations rather than adding an extra normal gene. The other choices describe breeding or crossing organisms, which are not medical techniques used to treat genetic disorders in humans.

In gene therapy, doctors introduce normal copies of genes into a patient’s cells to replace or compensate for faulty ones that cause disease. This helps the body produce the missing or defective protein again, aiming to treat or prevent the genetic disorder. The new gene is typically delivered into cells using a delivery method, such as a harmless virus, so the corrected cells can function normally.

This differs from genome editing, which directly changes the existing DNA sequence at a specific location to fix mutations rather than adding an extra normal gene. The other choices describe breeding or crossing organisms, which are not medical techniques used to treat genetic disorders in humans.