1. Tardigrade
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  4. Which one among the following was the first genetic material?

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Q. Which one among the following was the first genetic material?

Molecular Basis of Inheritance

Solution:

Evidences suggest that essential life processes such as metabolism, splicing, translation, etc., evolved around $RNA. RNA$ used to act as a genetic material as well as a catalyst and being a catalyst it was reactive and hence unstable. Therefore, $DNA$ has evolved from $RNA$ with chemical modifications.