$A$ : Sigma factor of $RNA$ polymesase recognizes the start signal region in prokaryotes.
$R$ : Promotor region lies at $5^{\prime}$ of template strand, $?$
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
Give scientific reasons : Both the strands of $DNA$ are not copied during transcription.
$RNA$ which carry amino acid from the cytoplasm to the ribosome is
A transcription unit in $DNA$ is defined primarily by the three regions in $DNA$ and these are with respect to upstream and down stream end;
In eukaryotes $mRNA$ transcribed is called
In eukaryotes, $mRNA$ is synthesized with the aid of