Multiple Choice
Which of the following is true for enhancer elements in eukaryotic gene regulation?
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16. Regulation of Expression
Introduction to Eukaryotic Gene Regulation
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What is the current understanding of the role of the TATA box in eukaryotic gene regulation?
A
It is involved in the termination of transcription.
B
It is a DNA sequence that helps position the transcription start site.
C
It acts as a signal for mRNA splicing.
D
It serves as a binding site for RNA polymerase directly.
Verified step by step guidance1
Understand that the TATA box is a DNA sequence found in the promoter region of many eukaryotic genes.
Recognize that the TATA box is crucial for the initiation of transcription, not termination or splicing.
Learn that the TATA box helps position the transcription start site by serving as a binding site for transcription factors, not directly for RNA polymerase.
Note that transcription factors, such as TATA-binding protein (TBP), bind to the TATA box and facilitate the recruitment of RNA polymerase II to the promoter.
Remember that the TATA box is part of the core promoter, which is essential for the accurate initiation of transcription in eukaryotic cells.
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