All of the above! Dna is very stable (compared to, say, many proteins).. it is essentially the cell's harddrive, while mRNA is more like the memory. DNA is ab

All of the above! Dna is very stable (compared to, say, many proteins).. it is essentially the cell's harddrive, while mRNA is more like the memory. DNA is able to express complex information through sequences of a small number of states, is replicated and maintained through a highly conserved set of molecular machinery throughout life, and the human experience in manipulating it is approaching that of pushing electrons across silicon boards. The similarities are quite startling!