Which statement about DNA replication is correct?

Answer and explanation

Correct answer: C. It is semi-conservative

  1. Step 1: Meselson and Stahl's work with nitrogen isotopes supported semi-conservative replication. Answer: It is semi-conservative. Why not the others: conservative replication was ruled out; DNA polymerase adds nucleotides to the 3' end (5' to 3'); helicase separates strands.

Practise more Nucleic acids and protein synthesis.

Free questions with an explanation for every one, and full timed A-Level UK (AQA, Edexcel, OCR) mock tests.

Which statement about DNA… | A-Level UK (AQA, Edexcel, OCR)