Two populations have the same inherited variation in coat thickness. In a cold habitat, thick-coated animals leave more offspring. In a warm habitat, thin-coated animals leave more offspring. Which statement is correct?
The advantage of an inherited characteristic depends only on its rarity.
The same inherited characteristic must be advantageous in both environments.
The advantage of an inherited characteristic depends on the environment.
The same inherited characteristic must become common in both environments.
44 exam-style questions on Edexcel GCSE Biology 4.1 Evolution and natural selection, covering 4.1.1 Work of Darwin and Wallace and 4.1.2 Resistant organisms and evolution. Each one has a worked solution and a mark scheme showing where the marks go.