GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Double helix segments
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Satellite segments
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Kornberg segments
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Okazaki segments
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Detailed explanation-1: -On the lagging strand, DNA synthesis restarts many times as the helix unwinds, resulting in many short fragments called “Okazaki fragments.” DNA ligase joins the Okazaki fragments together into a single DNA molecule. Helicase opens up the DNA at the replication fork.
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: -There is a continuous synthesis of one strand at the replication fork in the 5′ to 3′ direction – the leading strand. The second strand or the lagging strand is synthesized discontinuously in the 5′ to 3′ direction in the small fragments. These are called Okazaki fragments.
Detailed explanation-4: -Okazaki fragments are formed on the lagging strand away from the replication fork and later joined by the enzyme DNA ligase. Q.
Detailed explanation-5: -Lagging Strand: Definition The lagging strand is the strand of daughter DNA that is synthesized discontinuously in DNA replication. DNA replication is the process of making two identical daughter DNA molecules from one parent molecule.