In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: RNAi may be used for large-scale screens that shut down each gene to analyse cellular process or cell division .
A: 
RNAi may be used for large-scale screens that systematically shut down each gene in the cell , which can help to identify the components necessary for a particular cellular process or an event such as cell division .