Which of the following figures correctly represents the replication fork formed during DNA replication ?
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Explanation:
Synthesis of DNA by DNA polymerases occurs only in 5 → 3 direction. One strand called leading strand, is copied in the same direction as the unwinding helix. The other strand is known as lagging strand Replication of lagging strand is in a discontinuous way, and in the direction of growth of lagging stand is 3 → 5 though in short segments of DNA which are always in the 5 → 3 direction. These short segments are called Okazaki fragments joined together by the action of DNA ligase.
So, the correct option is 'D'.
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