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What happens first
An enzyme breaks the hydrogen bonds that connect the two strands of DNA together
Then what happens next
Free nucleotides floating around the nucleus form new bonds with the newly copy strands of DNA
What do the original DNA strands serve as?
The original DNA strand serves as templates for the new nucleotides to attach
Why is the new strand of DNA complementary to the original strand?
Why because each new base forms a pair with the base on the original