So let’s say I’ve got a new product, some sort of injection or other substance that allows customers to put a trait of some sort into some of their cells. It doesn’t have to be self-sustaining or permanent at all, and its alteration effect doesn’t need to go any further than just introducing the information for that trait into the user somehow—heck, it could even be something that needs constant replenishment. And let’s also say I’ve got a wide, interspecies and interplanetary base of customers for this.
Is there some sort of (hypothetical) biological substance I could use as an information-carrier, akin to DNA/RNA but compatible with all sorts of biochemistries rather than just one system of nucleic acids? (It doesn’t necessarily have to be full-on universal, but just not limiting it to only one or a few types of nucleotide-based genetic material would be nice.) Like a sort of “neutral” widely-readable system, or something containing multiple parts of different genetic code types.
The only job of this substance is to code a specific piece of information and not necessarily worry about being replicated, or any much further interaction with the systems of a host’s cells besides just getting the info there and allowing it to be recieved by host cells. So for example, some sort of alternate or “neutral” (if possible) system of bases/chemicals/etc that could be of use, since it doesn’t have to be replicated or integrated, only “read” by the host to utilize the information it contains. What sort of workaround might explain how an information-encoding molecule can be received and “read” by multiple types of biochemistries like that?