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irina1246 [14]
4 years ago
12

Examine model 2. number the steps below in order to describe the replication of dna in a cell. ______ hydrogen bonds between nuc

leotides form. ______ hydrogen bonds between nucleotides break. ______ strands of dna separate. ______ free nucleotides are attracted to exposed bases on the loose strands of dna.
Biology
1 answer:
Zigmanuir [339]4 years ago
5 0
1) Hydrogen bonds between nucleotide break
[the enzyme helicase breaks the hydrogen bonds between the 2 adjacent DNA strands first]

2) Strands of DNA separate
[This exposes the template strand used for the synthesis of a new DNA strand]

3) Free nucleotide are attracted to exposed bases on the loose strands of dna
[Free deoxyribonucleotises are recruited to complentary base pair on template strand from 5'to 3'direction by DNA polymerase which reads the template strand from 3'to 5' direction]

4) hydrogen bonds between nucleotide form.
[After new strand of DNA is synthesized, both template strand and new strand annuals by forming hydrogen bonds between each complimentary base pairs, marking the end of DNA replication. ]
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