Following are some statements about RNA interference. Which of them is/are correct? a. It is used to prevent infestation of unicellular organisms. b. It occurs in each and every prokaryote and a few eukaryotes as a means of cellular defense. c. There is a silencing of a specific mRNA molecule. d. Pest resistant plants are nowadays being produced by this method.

RNA interference (RNAi) also known as the post transcriptional gene silencing (PTGS), happens to be  a biological process whereby the RNA molecules leads to the inhibition of gene expression. It occurs in most of the eukaryotes. There is a silencing of a specific mRNA molecule due to a complementary dsRNA molecule. Pest resistant plants are nowadays being produced by this method.