There are also a lot more steps between 'genomic dna' -> 'protein' than was previously appreciated or thought to be of importance. There are a lot of ways to r

There are also a lot more steps between 'genomic dna' -> 'protein' than was previously appreciated or thought to be of importance. There are a lot of ways to regulate and produce new protiens and variation that is not itself a genomic change. Alternative splicing, readthrough regulaton, multiple kinds of ribosomes, post-translational regulation, etc. all produce significant variation outside of the dna itself.