Biology 9700 · 16 Inheritance
16.3 Gene control
Distinguish structural and regulatory genes, and explain eukaryotic and prokaryotic gene regulation using the lac operon and transcription factors.
- Questions
- 36
- Years
- 2003–2026
- Multiple choice
- 3
- Written answer
- 33
- Average marks
- 10.8
Where this subtopic appears
- Paper 4variants 04, 41, 42, 43, 4432
- Paper 1variants 11, 123
- Paper 6variants 061
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 4 | – | 5 |
| 2023 | 1 | 1 | 2 | 4 |
| 2022 | – | 1 | 1 | 2 |
| 2021 | – | – | 1 | 1 |
| 2020 | 1 | 3 | 4 | 8 |
| 2019 | 1 | 3 | 1 | 5 |
| 2018 | – | 2 | 2 | 4 |
| 2017 | – | 1 | – | 1 |
| 2016 | – | 3 | – | 3 |
| 2010 | – | – | 1 | 1 |
| 2007 | – | – | 1 | 1 |
| 2003 | – | 1 | – | 1 |
