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Transcription and Regulation

Transcription and Regulation
In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as

SV40 region
TATA box
CATT
Shine Dalgarno region

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Transcription and Regulation
Transcription of each set of rRNA genes by RNA polymerasel produces

a single 18S rRNA precursor molecule
a single 45S rRNA precursor molecule
a single 5S rRNA precursor molecule
a single 28S rRNA precursor molecule

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Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

RNA polymerase II
RNA polymerase III
RNA polymerase I
none of these

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Transcription and Regulation
Transcription factors are

CATT boxes
promoters
TATA boxes
proteins which bind to DNA and regulate transcription

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Transcription and Regulation
Rho-dependent termination of transcription in E. coli

removes mRNA and holoenzyme from the DNA
requires about 50 nucleotides of uncomplexed mRNA
requires ATP
both (a) and (b)

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Transcription and Regulation
The regions of a gene located at -10 and -35, with respect to the start of transcription, are termed

Shine Dalgarno sequences.
start codons.
oriC regions.
promoters.

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