Transcription of the structural genes within the lac operon will occur when A - VCE - SSCE Biology - Question 3 - 2019 - Paper 1

For transcription of the structural genes in the lac operon to occur, RNA polymerase must be bound to the promoter region of the operon. This binding is essential as it initiates the transcription process, allowing the genetic information to be copied into mRNA. In the absence of RNA polymerase binding, transcription cannot take place, regardless of other factors.