A population contains beetles with pale or dark shells. Shell colour is inherited. A fire darkens the ground, making pale beetles easier for birds to see. Several generations later, dark beetles are more common.
Which explanation links the change in the environment to the change in the population?
Dark beetles survived more often and reproduced, passing their shell-colour variants to their offspring.
Pale beetles survived the fire and darkened, passing their acquired shell colour to their offspring.
Dark beetles survived more often and reproduced, passing their shell-colour variants to other adults.
Pale beetles detected the darker ground and mutated, passing their required colour to their offspring.
44 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.