| Date | November 2011 | Marks available | 1 | Reference code | 11N.1.HL.TZ0.9 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 9 | Adapted from | N/A |
Question
Which of the following processes uses DNA ligase?
A. Unwinding DNA
B. Gene transfer using plasmids
C. Adding primers
D. Complementary base pairing
Markscheme
B
Examiners report
This question raised some issues in the G2s about lack of clarity. The phrase gene transfer could have confused the candidates; probably genetic modification would have been a better choice for it.
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