A: Single DNA dependent DNA polymerase cataly | vedclass

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(D) In eukaryotes,there are three types of $RNA$ polymerases ($RNA$ polymerase $I$,$II$,and $III$) that transcribe different types of $RNA$. In bacter

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Both Assertion and Reason are incorrect.

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(D) In eukaryotes,there are three types of $RNA$ polymerases ($RNA$ polymerase $I$,$II$,and $III$) that transcribe different types of $RNA$. In bacteria (prokaryotes),a single $DNA$-dependent $RNA$ polymerase catalyses the transcription of all types of $RNA$ ($mRNA$,$tRNA$,and $rRNA$). Thus,the Assertion is incorrect because eukaryotes use multiple polymerases,not a single one.Structural genes in bacteria are polycistronic (a single promoter regulates multiple genes),whereas in eukaryotes,they are monocistronic. Thus,the Reason is also incorrect.

$A$: Single $DNA$ dependent $DNA$ polymerase catalyses transcription of all types of $RNA$ in all except bacteria.
$R$: Structural genes in bacteria are monocistronic.

Similar Questions

In which direction is $m-RNA$ synthesized on a $DNA$ template?

What is absent in mature $RNA$?

$A$ : $RNA$ polymerase is of three types in eukaryotes for the synthesis of all types of $RNAs$.
$R$ : $RNA$ polymerase consists of six types of polypeptides along with rho factor which is involved in termination of $RNA$ synthesis.

If the sequence of the coding strand in a transcription unit is written as follows:
$5'-ATGCATGCATGCATGCATGCATGCATGC-3'$. Write down the sequence of $mRNA$.

Write a short note on the transcription unit.

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$A$: Single $DNA$ dependent $DNA$ polymerase catalyses transcription of all types of $RNA$ in all except bacteria.$R$: Structural genes in bacteria are monocistronic.