GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the promoter, structural gene and the terminator region.
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the promoter and the terminator region
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the structural gene and the terminator region
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the structural gene only.
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Detailed explanation-1: –The transcription is initiated when the RNA polymerase binds to the promoter which is the upstream DNA sequence found. They are those sequences that are responsible for the initiation of the process of transcription by sending the signals to the binding site where RNA polymerase attaches.
Detailed explanation-2: -The RNA polymerase holoenzyme transcribes the promoter, structural gene, and terminator.
Detailed explanation-3: -In bacteria, the RNA polymerase (RNAP) holoenzyme binds and unwinds promoter DNA, forming the transcription bubble of the open promoter complex (RPo).
Detailed explanation-4: -The subunit is bound relatively weakly to the rest of the enzyme (the core polymerase, E); is responsible for specific promoter recognition by RNA polymerase but is released during the initiation process.
Detailed explanation-5: -Promoter recognition by RNA polymerase is a key point in gene expression and a target of regulation. Bacterial RNA polymerase binds promoters in the form of the holoenzyme, with the specificity subunit being primarily responsible for promoter recognition.