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5 March, 13:43

How is the separation of dna like a zipper

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  1. 5 March, 14:10
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    The two strands must be separated like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases.

    Explanation:

    A double helix structure formed by two polypeptide chains is separated like the two sides of a zipper. A zipper is formed by breaking the weak hydrogen bonds that link the paired bases. During replication, an enzyme "Helicase" travels down the DNA and splits the chain and it forms 2 separate strands. The two DNA strand which has the same sequence must be separated like the two sides of a zipper by breaking weak hydrogen bases. During base pair-rule, the strand are unzipped and each strands is copied.
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