It's definitely doable in Star Trek, though non-essential genetic engineering inside the Federation is one of their few holdout prejudices.

There are other ways - it'd probably be "fairly easy" to rig a transporter into the holodeck, cross a few wires, and be uploaded into the machine, because the safety manual for both of those is just the sentence "do not turn on, if you turned it on back away from the console, if you did not back away: pray" repeated a thousand times in progressively larger letters.