> A question that often arises is: if current life evolved from chemistry that's simpler than DNA, why has that one disappeared? Maybe it hasn't.
The general thinking is that DNA evolved from RNA, which has certainly not dissappeared.
As to pre RNA chemistry, there is a good chance that the relevent chemicals still exist and are well studied. The issue is more that we have not worked out the specific proccess that led to the development of abundant RNA.
The general thinking is that DNA evolved from RNA, which has certainly not dissappeared.
As to pre RNA chemistry, there is a good chance that the relevent chemicals still exist and are well studied. The issue is more that we have not worked out the specific proccess that led to the development of abundant RNA.