Question

The process of splicing in eukaryotes represents the dominance of the:

• A. DNA world
• B. RNA world
• C. Protein world
• D. Lipid world

Hint:

Splicing is catalyzed by RNA (snRNA), not proteins or DNA, emphasizing the idea of RNA's ancient dominance.

Answer 1

The Correct Option is B

Splicing in eukaryotes is a process in which introns are removed from pre-mRNA. This process is carried out by small nuclear RNAs (snRNAs) that are components of the spliceosome. Since RNA itself plays a catalytic role, this highlights the concept of an “RNA world,” where RNA molecules acted as both genetic material and catalysts in early forms of life.