<prompt> Which of the following function is done by RNAi in a gene?Knock inKnockoutKnockdownKnock up  <response>: Ans. c Knock downRef: Robbins 9thpg 3-4Small interfering RNAs siRNAsShort RNA sequences introduced experimentally into cellsTheir action is similar to endogenous miRNAs.Synthetic siRNAs targeted against specific mRNA have become useful laboratory tools to study gene function so-called knockdown technology 