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2.7a - DNA replication

2.6
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7.1

Assessment statements

DCS Topic Code Statement Guidance
2.7.U1 The replication of DNA is semi-conservative and depends on complementary base pairing.  
2.7.U2 Helicase unwinds the double helix and separates the two strands by breaking hydrogen bonds.  
2.7.U3 DNA polymerase links nucleotides together to form a new strand, using the pre-existing strand as a template. The different types of DNA polymerase do not need to be distinguished.
2.7.A1 Use of Taq DNA polymerase to produce multiple copies of DNA rapidly by the polymerase chain reaction (PCR).  
2.7.S2 Analysis of Meselson and Stahl’s results to obtain support for the theory of semi-conservative replication of DNA.  

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2.7a - DNA replication
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