One hypothesis on the origin of DNA points to RNA viruses evolving a modified nucleotide that is insensitive to ribonucleases.

Question

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The hypothesis suggests that Ribonucleic acid (RNA) viruses developed a modified nucleotide that is resistant to ribonucleases, which allowed them to persist in cells for a longer time. Over time, this modified nucleotide could have been incorporated into the genetic material of cells, leading to the evolution of DNA.

One Hypothesis on the Origin of DNA Points to RNA