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Process of Transcription

During transc...

Question

During transcription, RNA polymerase holoenzyme binds to a gene promoter and assumes a saddle-like structure. What is its DNA-binding sequence?

A

TATA

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B

TTAA

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C

AATT

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D

CACC

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Solution

The correct option is A TATA
TATA box is a DNA sequence that is present in the promoter region of the DNA of eukaryotes and some archaea. The TATA box usually contains the sequence TATA and followed by a variable sequence. During transcription, the RNA polymerase holoenzyme recognizes the TATA sequence in the promoter, binds to it and initiates transcription.

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Process of Transcription

Standard XII Biology

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