The theory of biological Evolution includes the concept that?

... Chromosomes contain [biochemically] linear information that produces three types of proteins: structural, enzymatic, and control related [functional]- and that the order of these linearly composed proteins is subject to 'a highly specific / predictable / and regular rate of mutation(s)' - that equally regularly produce slightly altered protein products with slightly altered 'biochemical and hence biological activity' properties, and right here is where the concept of "biological selection through bio-FITNESS" occurs; whereas more fit biochemical processes produce improved biochemistry ..., then through these processes biological Evolution occurs.