A breeder wants to produce a variety of wheat that grows well in salty soil. Five wheat seedlings of similar starting height were grown in the same salty soil for four weeks. Their heights were then measured.
| Seedling | Height after four weeks in cm |
|---|---|
| A | 18 |
| B | 21 |
| C | 27 |
| D | 15 |
| E | 23 |
Describe how the breeder could use selective breeding to produce plants that grow well in salty soil. Use the results in your answer.
127 exam-style questions on OCR GCSE Biology 6.2 Feeding the human race, covering 6.2.1 Biological factors affecting food security, 6.2.2 Agricultural solutions to growing demand, 6.2.3 Selective breeding, 6.2.4 Genetic engineering, 6.2.5 Steps in genetic engineering, 6.2.6 Benefits and risks of gene technology in agriculture, and 6.2.7 Biotechnological solutions to growing demand. Each one has a worked solution and a mark scheme showing where the marks go.