3 ms·

If that happened, it was certainly a good time before there were multicellular life. Hence, no remnants. There are some hints that there was an RNA-based world

by berntb 17y ago

If that happened, it was certainly a good time before there were multicellular life. Hence, no remnants. There are some hints that there was an RNA-based world before DNA. A strong one is that ribosomes is made partly from RNA.