Question

How does the process of splicing represent the dominance of RNA world?

Answer 1

Splicing

1. RNA splicing is a biological process where a newly synthesized pre-mRNA transcript is processed and transformed into mRNA. It involves the removal of non-coding regions of RNA (introns) and the joining of the coding regions (exons).
2. The primary transcript consists of introns and exons. Introns were previously in past an important piece of information used to form mRNA but now are of no importance.
3. 'Process of splicing represents the dominance of RNA world' implies that RNA is the one that decides whether to keep introns or not, DNA keeps both.
4. It assists in the evolution process by forming different combinations of exons, thereby making new and improved proteins.