Biology 9700 · 17 Selection and evolution
17.1 Variation
Explain the genetic and environmental basis of continuous and discontinuous variation, and use the t-test to compare sample means.
- Questions
- 48
- Years
- 2005–2026
- Multiple choice
- 1
- Written answer
- 47
- Average marks
- 11.1
Practise selection and evolution questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 4variants 04, 41, 42, 4334
- Paper 5variants 05, 51, 52, 5312
- Paper 1variants 111
- Paper 6variants 061
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 3 | – | 4 |
| 2023 | 1 | 2 | – | 3 |
| 2022 | – | 1 | – | 1 |
| 2021 | – | 1 | 1 | 2 |
| 2020 | – | 2 | 1 | 3 |
| 2019 | 2 | 3 | 4 | 9 |
| 2018 | 2 | 3 | 2 | 7 |
| 2017 | – | 3 | – | 3 |
| 2016 | – | 2 | 3 | 5 |
| 2015 | – | 2 | 2 | 4 |
| 2009 | – | 1 | 1 | 2 |
| 2007 | – | 1 | 1 | 2 |
| 2006 | – | – | 1 | 1 |
| 2005 | – | 2 | – | 2 |
