Which of the following statements are correct regarding the process of RNA interference? (i) Thi...

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Which of the following statements are correct regarding the process of RNA interference?
(i) This is used to prevent the infestation of protozoans.
(ii) It takes place in some eukaryotic and all prokaryotic organisms as a method of cellular defense.
(iii) The method involves silencing of a specific mRNA due to a complementary dsRNA molecule.
(iv) It is a novel strategy to produce pest-resistant plants.
(a) (iii) and (iv)
(b) (i) and (iii)
(c) (i) and (ii)
(d) (ii), (iii) and (iv)
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