Q. 75.0( 1 Vote )
Protein synthesis machinery revolves around RNA but in the course of evolution it was replaced by DNA because: 1.RNA was unstable and more prone to mutations, as it is a single stranded molecule.
2. Chemical modification of RNA led to the evolution of DNA which is a double stranded molecule, having complementary base pairing with hydrogen bonds. This makes it more stable and less prone to mutation.
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