I’ve been really fascinated by this idea lately storing encrypted Bitcoin private keys or seed phrases in synthetic DNA. DNA has been nature’s way of encoding information for several years, and with how far DNA synthesis and storage technology seem to have come, it is already possible to encode everything from books to operating systems into DNA strands. So why not Bitcoin private keys?
On a very serious and practical note even if there was a way to do that I wouldn't even consider it at all. While trying to secure your seed it is best to always remain as simple as possible even if you are trying to encrypt the seed phrase this is because of situations we've seen online where people become unable to decrypt their seed phrase back to the original form sometimes because they can't remember the encryption method or because it was too complex.
Honestly there is actually nothing as good as the good old paper wallet both matters the most is how you are saving your seed phrase and how secure your storage is and also how private it is. Privacy matters because no one will go looking for a seed phrase if they don't know it there.