Strawberry plants can reproduce in two ways.
They can reproduce asexually by growing runners. A runner is a new plant that grows from the stem of the parent plant.
They can also reproduce sexually by producing seeds.
Explain why strawberry plants grown from runners show very little genetic variation.
Explain why strawberry plants grown from seeds show a lot of genetic variation.
A farmer grew runners from one parent plant in two different fields. The strawberries from the plants in field 2 were much larger than the strawberries from the plants in field 1.
Explain the difference in the size of the strawberries.
40 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.