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The RNA world hypothesis states that RNA predated DNA as the hereditary molecule and was used in place of proteins as a catalyst. Over time, DNA developed and was used for genetic information storage, and protein enzymes took over most catalytic functions in cells.

Which of the following experiments could produce evidence supporting the RNA world hypothesis?


The experimenter generates random RNA sequences and then tests those molecules' ability to catalyze biochemical reactions.


The experimenter measures the rates of transcription and translation in a wide variety of organisms.


The experimenter produces an environment closely matching the atmosphere of early Earth and then records which organic molecules are formed.


The experimenter uses $N_{15}$ isotopes to trace the movement of RNA from a retrovirus virus in a cell.

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