What is the function of RNA Primer during DNA Replication?

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Solution

RNA primers are short nucleotide sequences that are needed to initiate replication. During initiation, primers are added on both the separated strands of DNA leaving 3^'OH free for the addition of new nucleotides (polymerisation) for elongation, to form two new strands of DNA.

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Q. Sir/Mam, during DNA replication,what is tge role of a rna primer.Also why there is rna primer not dna primer?

Q. How many of the following statements are correct ?

A. DNA dependent DNA polymerase requires DNA primer for initiating replication but DNA dependent RNA polymerase does not require any primer for transcription.

B. DNA dependent DNA polymerase requires RNA primer for initiating replication but DNA dependent RNA polymerase does not require any primer for transcription.

C. During replication, unwinding of DNA double helix forms a fork-like structure called replication fork.

D. During transcription, unwinding of the DNA double helix by DNA dependent RNA polymerase forms a transcription bubble.

E. During transcription, unwinding of DNA double helix by DNA dependent RNA polymerase forms a transcription fork.

Which of the following properites of DNA polymerise necessitates the requirement of RNA primer in DNA replication?

Match the following enzymes of DNA replication with their respective functions:
$\begin{matrix} p . D N A p o l y m e r a s e & i . H e l p s u n z i p t h e D N A d o u b l e h e l i x q . D N A l i g a s e & i i . S e a l s n i c k s b e t w e e n O k a z a k i f r a g m e n t s r . D N A h e l i c a s e & i i i . L a y s R N A p r i m e r s t o w h i c h p o l y m e r a s e c a n a d d n u c l e o t i d e s s . P r i m a s e & i v . A d d s n u c l e o t i d e s t o t h e f r e e 3^{'} e n d o f R N A p r i m e r s \end{matrix}$

Q. What is the function of RNA primer during protein synthesis.

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What is the function of RNA Primer during DNA Replication?

RNA primers are short nucleotide sequences that are needed to initiate replication. During initiation, primers are added on both the separated strands of DNA leaving 3'OH free for the addition of new nucleotides (polymerisation) for elongation, to form two new strands of DNA.

RNA primers are short nucleotide sequences that are needed to initiate replication. During initiation, primers are added on both the separated strands of DNA leaving 3^'OH free for the addition of new nucleotides (polymerisation) for elongation, to form two new strands of DNA.