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Answer:

Before replication can occur, the length of the DNA double helix about to be copied must be unwound. In addition, the two strands must be separated, much like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases.

Explanation:

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Answer:

i cant see the options but i believe its Separation of the DNA double helix. DNA does not separate into codons.

Explanation:

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