Big Idea 1.D
What is the RNA World hypothesis?
The RNA world concept hypothesizes that about four billion years ago, the first genetic substance on Earth was the small, single-stranded RNA molecule.
Ribozyme, a type of RNA, can carry out many functions:
- Catalyze reactions (like enzymes do)
- Splices RNA by itself, without the need for proteins
- Removes its own introns during RNA processing
- Joins amino acids together to form a polypeptide during translation in ribosomes