Describe your experience with writing a stand operating procedure (SOP).
You will likely be asked a variety of experience- and knowledge-based questions such as this one. Depending on the specific environment, you may also be tasked with actually writing an SOP or manual if the associated lab implements a new procedure or updates an existing one. This question is confirming that you either have experience or feel comfortable with such a task.
"I designed, optimized, and validated a new DNA extraction assay to be utilized on several downstream applications. This required not only careful record keeping of preliminary protocols and data, but also the final SOP once optimized."