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The accessibility of promoter regions of...

The accessibility of promoter regions of bacterial DNA in many cases regulated by the interaction of proteins with sequences termed

A

Promoter

B

Operator

C

Regulator

D

Cistron

Text Solution

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The correct Answer is:
B
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Assertion :- The activity of RNA polymerase at a promotor is regulated by interaction with accessory protein, which affect its ability to recognize start sites. Reason : The accessibility of promotor region of prokaryotic DNA is in many cases is regulated by interaction of proteins with operators.

Mutational events, which result in the deletion or addition of nucleotide bases in DNA, thereby causing gross changes in the amino acid sequences of proteins are termed as