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8 May, 09:09

Which event marks the beginning of DNA replication?

A) Formation of replication bubble

B) Unwinding of DNA helix

C) Formation of replication fork

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Answers (1)
  1. 8 May, 10:30
    0
    B is the correct answer. The beginning of DNA replication occurs with the unwinding of the DNA helix by a special enzyme. The two strands that form the helix then create a replication fork. The two strands are then oriented differently, one becoming the 'leading strand' and one the 'lagging strand'.
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