A forestry project plants 600 cloned saplings produced from cells taken from one parent tree. The project also plants 600 saplings of the same species grown from seeds collected from many parent trees. Both groups are grown under the same environmental conditions. A disease spreads through the saplings.
| Group of saplings | Healthy after 12 weeks | Diseased after 12 weeks | Dead after 12 weeks |
|---|---|---|---|
| Cloned | 120 | 360 | 120 |
| Grown from seeds | 330 | 210 | 60 |
Explain which group of saplings the forestry project should use to establish a woodland where a different disease may appear in the future.
80 exam-style questions on AQA GCSE Biology 6.2 Variation and evolution, covering 6.2.1 Variation, 6.2.2 Evolution, 6.2.3 Selective breeding, 6.2.4 Genetic engineering, and 6.2.5 Cloning. Each one has a worked solution and a mark scheme showing where the marks go.