| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.SL.TZ2.15 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | State | Question number | 15 | Adapted from | N/A |
Question
What is amplified using the polymerase chain reaction (PCR)?
A. Large amounts of RNA
B. Small amounts of DNA
C. Small amounts of protein
D. Large amounts of polymers
Markscheme
B
Examiners report
Quite a few candidates picked option A instead of D, but this statement is invalid when dealing with sex-linked genes. The question had a high discrimination index.
Syllabus sections
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