The two scientists demonstrated that some RNA molecules could do the job directly.

Additionally, in the past a given RNA molecule might have survived longer than it can today.

In other cases, the RNA molecules are the actual functional products.

RNA molecules are an important type of intracellular differentiation control signal.

Both single- and double-stranded regions are often found in RNA molecules.

This can be used to begin to develop a model of secondary structure for the RNA molecule.

In between there are some missing steps such as how the first RNA molecules could be formed.

It is not too easy to see how the first RNA molecules could have come into existence.

The starting point is the unaltered 5' end of an RNA molecule.

You're aware that the brain stores memory in RNA molecules?