[Frumious Bandersnatch]

Where do information-rich structures (so necessary for evolution) evolve from?

[Exnihilo]

Don't ask questions like that!! You're talking about abiogenesis, and you'll quickly be told that "evolution has nothing to do with abiogenesis". This is the ultimate cop out of course, but that's what you'll be told. Otherwise, you'll get a cute story about amino acids linking together, some how forming RNA, and magically becoming DNA, and at the same time developing the ability to convert energy into a usable form! The yarns they will spin make Grandma's stories seem boring!

[Semper]

Where do information-rich structures (so necessary for evolution) evolve from?

I don't know, I'm not a biologist. Just using reason, however, it would seem logical that an "information-rich structure" would have evolved from an "information-poor structure". In other words, in an infinite process of change, each iteration of a particular life form would contribute to the informational progress of the next iteration of that life form, appropriate to the developing environment.