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Dna Bonds Free Nucleotides Pcr Heated 95°C Break

Front What happens in PCR?
Back - DNA heated to 95°C
- to break H bonds and separate strands

- DNA cooled to 60°C
- to allow primers to anneal to ends of DNA fragments
- free DNA nucleotides bind to complementary DNA base
- adenine with thymine and cytosine with guanine

- temperature increased to 70°C
- DNA polymerase forms phosphodiester bonds between free nucleotides
- in condensation reactions

- cycle is repeated to amplify amount of DNA

Tags: gene_technology

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