I kind of suspect life wouldn’t exist today if it didn’t make the occasional error. Although I believe DNA does have rudimentary correction mechanisms: each strand is paired up with its negative and duplicated chromasomes will have 2 chromatids. In those cases there are kind of 4 copies. Sometimes errors are corrected by using the other chomatid as a template. However, not all that useful before the chromosome is duplicated.
At some point the data has to be copied for reproduction, so DNA must be writable at least for new copies, but that’s part of what makes the copying process so vulnerable. However, I do agree that it’s too easy to trigger a write, and while histones reduce writability, they also reduce readability.
I kind of suspect life wouldn’t exist today if it didn’t make the occasional error. Although I believe DNA does have rudimentary correction mechanisms: each strand is paired up with its negative and duplicated chromasomes will have 2 chromatids. In those cases there are kind of 4 copies. Sometimes errors are corrected by using the other chomatid as a template. However, not all that useful before the chromosome is duplicated.
At some point the data has to be copied for reproduction, so DNA must be writable at least for new copies, but that’s part of what makes the copying process so vulnerable. However, I do agree that it’s too easy to trigger a write, and while histones reduce writability, they also reduce readability.