Which of the following is a first genetic material?

DNA

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RNA

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Protein

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None of the above

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Solution

The correct option is A RNA
RNA was considered to be the first genetic material and there is a variety of evidence that suggests that the essential life processes revolve around RNA like metabolism, translations all use RNA as a catalyst.
Being the catalyst it was reactive and hence unstable to be served as the genetic material, therefore, DNA evolved from RNA with structural and chemical modification to make it more stable.

So, the correct option is 'RNA'

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