How are bacteria able to adapt to a rapidly changing environment? A) During transcription, RNA polymerase is unable to bind and commence transcription. B) Bacterial genes, in a rapidly changing environment, mutate rapidly in response to these changes. C) Bacterial genes are organized into operons, clusters of coregulated genes, that are regulated such that they are all turned on or off together. D) Bacterial cells are prokaryotic and genes have ready access to the ribosomes within the cell's cytoplasm. Transcription, then, take place at a very rapid rate.