| Date | November 2013 | Marks available | 1 | Reference code | 13N.1.SL.TZ0.12 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 12 | Adapted from | N/A |
Question
What is the difference between dominant, recessive and codominant alleles?
Markscheme
C
Examiners report
The genetics questions were well answered by the vast majority of candidates.
Syllabus sections
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