Q27 · 2022 · Paper 1Unclassified2 marks
QUESTION 27 (2 marks)
Explain the purpose of gel electrophoresis in DNA profiling.
WORKED SOLUTION
2 marksQCAA guide · typeset solution
QCAA sample response and mark allocation
27 | Gel electrophoresis separates DNA segments based on size to produce characteristic banding patterns. | • identifies that gel electrophoresis is used to separate DNA fragments based on size [1 mark] • explains that this produces characteristic banding patterns [1 mark] |
QCAA sample response and marking criteria reproduced from the official guide.
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