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Molecular Genetics

Quick questions on DNA structure and replication: H2 Biology Molecular Genetics

4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is semi-conservative replication?
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Replication is semi-conservative: each new molecule has one original strand and one new strand.
What is q1?
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State the base that pairs with cytosine and the number of hydrogen bonds between them. [1 mark]
What is q2?
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Explain the role of DNA ligase in replication. [1 mark]
What is q3?
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A length of DNA has 600 base pairs and 360 of them are A-T pairs. Calculate the number of cytosine bases in this length. [2 marks]

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