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Restriction Enzyme

Methyl guanos...

Question

Methyl guanosine triphosphate is added to the 5 $^{‘}$ end of hnRNA in a process of

A

splicing

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B

capping

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C

tailing

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D

none of these

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Solution

The correct option is D capping
At 5 end of hnRNA, a cap is formed by modification of GTP into 7-methyl guanosine or 7mGppp. This process is called capping and it protects the mRNA from degradation by nucleases.
So, the correct answer is 'capping'

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Q. Choose the correct answer from the alternatives given :
Select the correct statements regarding the process of transcription in eukaryotes.
(i) The strand of DNA which takes part in transcription process is called as coding strand.
(ii) The enzyme .RNA polymerase can catalyse polymerisation only in one direction i.e.., 5

\to

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(iii) An unusual nucleotide methyl guanosine triphosphate is added to the 5 end of hnRNA during capping.
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2. 3' end - tailing - addition of methyl guanosine triphosphate
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