Q.

Silencing of specific mRNA is possible via RNAi because of               [2025]

1 Complementary dsRNA  
2 Inhibitory ssRNA  
3 Complementary tRNA  
4 Non-complementary ssRNA  

Ans.

(1)

RNAi (RNA interference) takes place in all eukaryotic organisms as a method of cellular defense. This method involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA.