RNAi Choose one: A. destroys the infected cells and halts viral production. B. allows host cells to remember infection by copying small sections of viral DNA into RNA. C. occurs at random leading to the prevention of some key steps in the viral replication cycle. D. recognizes viral mRNA and prevents further viral gene expression.

Answer:Option D

Explanation:

The RNAi serves as a tool for studying the various functions of the gene because it works on the principle of sequence specific gene suppression in a variety of organism and cultured cells.

It is employed to the target the desired mRNA degradation after the introduction of the sequence specific dsDNA.

The RNA interference hence, will recognize the viral mRNA and prevents the viral gene expression.