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Deoxyribonucleic acid (DNA) is the carrier of genetic information, including for all known living organisms. The only known exceptions are RNA viruses.

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Why was not RNA completely replaced by DNA when the RNA world evolved into a DNA and protein...

If DNA just has a slightly different chemical composition from RNA, why can't DNA act as a catalyst and why hasn't it replaced RNA? … Here, I am talking in terms of evolution, shouldn't evolution just replace all the RNA with DNA? …
James Moriarty's user avatar