I wonder, what can Universe DNA determine... like... natural laws? existence of magic? tendency of species towards developing psychic powers? Can there be a universe where instead of planets we have a load of bowls with water sitting on top of turtles? Appearance of the frog? All the ways the Ultimate frogs can differ.

Given what we’ve seen on Universe A, B and C, the Genetic Code doesn’t exactly affect much other than how healthy the Frog is and possibly the configuration of galaxies and stars and such. Natural Laws seem to apply the same to all 3 Universes, Magic is tied to Aspects, and Aspects are the building blocks of Reality in all of Paradox Space, ergo they are immutable and part of every Universe. I do know, though, physically, Planets could also take the shape of a Torus so maybe there’s a genetic sequence to get more Donut Planets. Color of the Genesis Frog also seems to be a thing. In general, it seems the code is more concerned with Billious Slick as an entity rather than the Universe within- But there could also be something to do with the Species and the Sessions it will spawn.

Also some people Headcanon that the last Genesis Frog is a sequence that gives Cherubs to the Universe, they are defined as a sort of ‘immune system’ after all, so it’d make sense for them to be defined within the parameters of the Frog’s DNA.