Elucidate the different control points of gene expression in organisms. Discuss most prevalent mode of control of gene expression in prokaryotes.

Gene expression is a complex process through which genetic information encoded in DNA is utilized to synthesize functional products, such as proteins or RNA molecules. This process is tightly regulated at various levels to ensure proper functioning of an organism. The control of gene expression involves multiple checkpoints and regulatory mechanisms, which can be broadly categorized into transcriptional, post-transcriptional, translational, and post-translational controls.

1. Transcriptional Control:
   Transcription is the first step of gene expression, where the information in DNA is transcribed into RNA. Transcriptional control is a major regulatory point. Regulatory proteins, called transcription factors, bind to specific DNA sequences (promoters or enhancers) and ______ _____ ___ __________ _________ ______ _________ _____ ___ ___ ____ __________.
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