Why is genetic modification subject to enhanced oversight in laboratory animal research?

• A. It has no welfare implications and is purely technical.
• B. It raises welfare and ethical considerations, potential off-target effects, and requires rigorous regulatory and welfare oversight.
• C. It is cheaper and faster than other methods.
• D. It always produces clearer data with no drawbacks.

Answer: (B)

Genetic modification in laboratory animals can introduce new traits that affect health, well-being, and behavior, potentially causing suffering or distress. This raises welfare and ethical considerations, and because edits can have off-target effects or unpredictable phenotypes, robust regulatory and welfare oversight is necessary to protect animals and ensure scientific validity. Oversight also enforces risk assessment, humane endpoints, and adherence to the 3Rs, helping balance scientific gains with potential harms. This is why enhanced oversight is warranted; the other statements miss or downplay welfare concerns, assume unchecked benefits like lower cost or faster results, or claim there are no drawbacks.