THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Enzyme Helicase is used to stabilize the ssDNA
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Enzyme DNA Pol. I is the main polymerizing enzyme
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Enzyme ligase is used to employ RNA primers
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Okazaki fragments are made up of deoxynucleotides
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Detailed explanation-1: -So, the correct answer is ‘DNA synthesis takes place mainly by DNA–polymerase I in E. coli’. Q. Which of the following regarding DNA replication, is/are correct?
Detailed explanation-2: -Okazaki fragments are short sequences of DNA nucleotides (approximately 150 to 200 base pairs long in eukaryotes) which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication.
Detailed explanation-3: -Okazaki fragments are short sections of DNA formed at the time of discontinuous synthesis of the lagging strand during replication of DNA. It is essential as it allows for the synthesis of both the daughter strands required for cell division.
Detailed explanation-4: -(01) An Okazaki fragment has the following arrangements: primase, ligase, polymerase 3’ RNA nucleotides; DNA nucleotides 5’ 5’ RNA nucleotides, DNA nucleotides 3’ DNA polymerase I, DNA polymerase III.