One of the biggest mysteries about the origin of life is how fragile RNA molecules could have gathered and survived before the first cells appeared. New research points to a possible answer: a tiny chemical difference between RNA and its close cousin DNA. The study shows that RNA is unusually good at assembling into tiny, liquid-like droplets that concentrate molecules.
These droplets may have acted as primitive compartments, gathering the ingredients needed for early chemical reactions. Because RNA forms these structures more readily than DNA, the finding suggests that RNA's unique chemistry gave it a natural advantage at the dawn of life. The work offers a concrete mechanism for how the first genetic molecules could have clustered together in a pre-cellular world.
While the research does not prove that life began this way, it provides a plausible step in the chain of events. Understanding how RNA could concentrate itself brings scientists closer to explaining the transition from simple chemistry to biology.