OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the DNA sequence or part of the gene called where transcription factors bind and signal the start of transcription.
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Start codon
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Promoter
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Terminator
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Initiation
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Explanation:
Detailed explanation-1: -The first step in transcription is initiation, when the RNA pol binds to the DNA upstream (5′) of the gene at a specialized sequence called a promoter (Figure 2a).
Detailed explanation-2: -Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the promoter. This signals the DNA to unwind so the enzyme can ‘’read” the bases in one of the DNA strands.
Detailed explanation-3: -A promoter, as related to genomics, is a region of DNA upstream of a gene where relevant proteins (such as RNA polymerase and transcription factors) bind to initiate transcription of that gene.
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