Biology 5090 · 17 Inheritance
17.2 DNA
Describe DNA structure, define genes, and explain how base sequences determine amino acid sequences.
- Questions
- 52
- Years
- 2005–2026
- Multiple choice
- 37
- Written answer
- 15
- Average marks
- 3.4
Where this subtopic appears
- Paper 1variants 01, 11, 1237
- Paper 2variants 02, 21, 2215
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2026 | 4 | – | 4 |
| 2023 | 2 | 4 | 6 |
| 2022 | – | 1 | 1 |
| 2021 | 1 | 2 | 3 |
| 2020 | 1 | – | 1 |
| 2019 | 1 | 2 | 3 |
| 2018 | 1 | 3 | 4 |
| 2017 | 3 | 2 | 5 |
| 2016 | 3 | 3 | 6 |
| 2015 | 1 | – | 1 |
| 2014 | – | 1 | 1 |
| 2013 | 2 | 1 | 3 |
| 2012 | 2 | – | 2 |
| 2011 | – | 1 | 1 |
| 2010 | – | 1 | 1 |
| 2009 | – | 2 | 2 |
| 2007 | – | 1 | 1 |
| 2006 | 3 | 1 | 4 |
| 2005 | 1 | 2 | 3 |
