Question

(iii) How do sense and anti-sense RNAs function?

Hint:

Sense and anti-sense RNAs regulate gene expression through RNA interference mechanisms.

Answer 1

Key Definitions:

• Sense RNA: The gene's coding sequence, serving as a protein synthesis template during translation.
• Anti-sense RNA: Complementary to sense RNA, it binds to sense RNA, forming a double-stranded RNA complex that inhibits ribosomal translation.

RNA Interference (RNAi):

• RNAi is a gene silencing process wherein double-stranded RNA impedes the expression of a targeted gene.
• RNAi technology is extensively applied in plants for managing pests, pathogens, and undesirable characteristics.

Example: Anti-sense RNA in transgenic tobacco targets and silences vital nematode genes, thereby hindering their survival and reproduction. % Quick tip