Biology / Unit 8 Bio 1833 short lesson, about 20 seconds
The RNA World Hypothesis
Captions available
The idea
The RNA-world hypothesis proposes that RNA once served as both hereditary material and catalyst, before DNA and proteins divided that work between them.
In practice
A ribozyme catalyzing its own copying, without any protein enzyme present, models how early RNA might have replicated itself.
Where people slip
This is one competing hypothesis for life's origin, not settled — this course takes no side on how life began.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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