> Yes but is the behaviour of complex molecules independent of evolution ? Is
> it not that the structure and fucntion of complex biological molecules are
> actual products of evolution or do you have some other explaination ?
I think that if by random mutation a new protein arises,
and it serves as an enzyme and one of its active sites
benefits the organism, then it may be that any additional
active sites and associated functions that it also has may be
unused or underused under normal circumstances.
Evolution doesn't say "one enzyme, one function".
If an enzyme hypothetically has 3 active sites and functions,
and offers has great benefits but the other two are
mildly problematic, then the gene that codes for the enzyme
will be passed on.