dna is often explained as if it was computer code, but its important to remember its literally a bunch of physical strings. just as important as the sequence itself is how these physical strings are packaged and where proteins attach to them, because this determines which parts can even be read
purified dna looks like this in bulk
most of your dna does not code for protein, and it seems that much of it is involved in regulating the shape and packaging of the physical string
highly thermophilic organisms have a lot of GC pairs in their genomes. why? because they are simply more stable under high temperatures.
