A researcher produces new plants using cells taken from a single parent plant. The cells divide by mitosis as each new plant develops. No mutations occur.
The new plants are split between two environments. All conditions are kept the same except for the daily period of light.
| Daily period of light in hours | Mean increase in height after 30 days in cm |
|---|---|
| 6 | 4.2 |
| 12 | 7.8 |
The researcher concludes that the difference in mean increase in height proves that the plants in the two environments are genetically different.
Evaluate the researcher's conclusion.
92 exam-style questions on Edexcel GCSE Biology 3.1 Reproduction and meiosis, covering 3.1.1 Advantages and disadvantages of reproduction and 3.1.2 Role of meiotic cell division. Each one has a worked solution and a mark scheme showing where the marks go.