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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some long strands of DNA and some short ones (Okazaki fragments)
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only long strands
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only short strands (Okazaki fragments)
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1 double helix
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Detailed explanation-1: -The strand with the Okazaki fragments is known as the lagging strand. As synthesis proceeds, an enzyme removes the RNA primer, which is then replaced with DNA nucleotides, and the gaps between fragments are sealed by an enzyme called DNA ligase.
Detailed explanation-2: -What are Okazaki Fragments For? 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-3: -Answer and Explanation: Okazaki fragments are produced because the DNA polymerase can only synthesize in the 5’ to 3’ direction. Recall that DNA consists of two complementary strands that are antiparallel in arrangement.
Detailed explanation-4: -Okazaki fragments are present in both prokaryotes and eukaryotes. DNA molecules in eukaryotes differ from the circular molecules of prokaryotes in that they are larger and usually have multiple origins of replication.