Scientists record the phenotypic outcomes of 600 mutations in maize plants.
| Effect on phenotype | Number of mutations |
|---|---|
| No effect | 540 |
| Small effect | 48 |
| Large effect | 12 |
What percentage of the mutations that changed phenotype had a small effect?
10%10\%10%
80%80\%80%
8%8\%8%
20%20\%20%
96 exam-style questions on Edexcel GCSE Biology 3.4 Variation and the Human Genome Project, covering 3.4.1 Causes of variation, 3.4.2 Outcomes of the Human Genome Project, 3.4.3 Genetic variation within a population, and 3.4.4 Effects of genetic mutations on phenotype. Each one has a worked solution and a mark scheme showing where the marks go.