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What is the cause of discontinuous synthesis of DNA on one of the parental strands of DNA? What happens to these short stretches of synthesised DNA?

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DNA polymerase catalyses polymerisation in only one direction, i.e. 5' - 3'. Due to this, replication is continuous on one strand (3'-5’), while it is discontinuous on another strand (5' – 3') The fragment which is discontinuous is later joined by DNA ligase.

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