2.7a - DNA replication
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. |
Video lessons
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Review materials
| 2.7a - DNA replication |