A Current Leading Hypothesis About the First System of Inheritance

question 40

Multiple Choice

A current leading hypothesis about the first system of inheritance in the earliest life-forms involves

• A)self-replicating DNA molecules (the "DNA world" hypothesis).
• B)self-replicating RNA molecules aided by ribozymes.
• C)proteins that served as templates for RNA molecules, leading to the formation of DNA.
• D)self-replicating polypeptides aided by ribosomes.

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