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The RNA world hypothesis maintains that RNA predates DNA as a hereditary molecule. The hypothesis suggests that RNA could catalyze its own replication as well as other biochemical reactions.

Which of the following is evidence for the RNA world hypothesis?

A

Microfossils.

B

Ribozymes are RNA molecules that have been shown to catalyze reactions.

C

Some modern prokaryotes use RNA without using DNA.

D

The atmosphere of primitive earth favored the production of nucleic acids over other macromolecules.

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