Which of the following is an evidence of RNA world?
A
Ribozyme
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B
Nucleotide cofactor
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C
Protein
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D
Both A and B
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Solution
The correct option is D Both A and B RNA was the first genetic material it is now proved with enough evidence because many of the life processes like metabolism and translation revolve around RNA.
It was used as a genetic material as well as a catalyst because there is some important chemical reaction in the system that uses ribozymes as the enzymes and not protein enzymes.
But RNA as a catalyst was very unstable and reactive and therefore DNA evolved from RNA.