During replication of DNA, the two strands of the double helix are separated from each other under the influence of enzyme

Rep-protein

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SSBP

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Initiator protein

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DNA polymerase

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Solution

The correct option is A Rep-protein
Rep protein is the repetitive extragenic palindromic protein that serves to unwind the DNA to initiate the replication. SSB proteins serve to stabilise the unwound DNA by preventing the formation of H-bonds between the base pairs of the ssDNA. DNA polymerase elongates the primer by addition of deoxyribonucleotides. Initiator proteins serve to recognise the ori followed by formation of primosome.
So, the correct answer is option A.

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Similar questions

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.

Q. Assertion :The mechanism of DNA replication is semi-conservative in nature. Reason: Each of the complementary strands of the parental double helix is conserved during the process.

Q. Which enzyme catalyzes the separation of DNA strands during DNA replication?

During replication, DNA dependent RNA polymerase works in direction _{_________} and from Okazaki, the polarity of other parental strand is _{________}.

Q. Match List I(Enzyme) with List II(Function) and select the correct answer using the codes given the lists.

List-I	List-II
a. DNA Ligase	$1$ . Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
b. DNA polymerase	$2$ . End nuclease that digests either single stranded or double stranded DNA
c. DNase I	$3$ . Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
d. DNA topoisomerase	$4$ . Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

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