Pearson Edexcel A-Level Biology A (9BI0) · EDEXCEL 9BI0

Topic 7 Genetics, Populations, Evolution and Ecosystems

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Practice questions on Genetics, Populations, Evolution and Ecosystems

Explain how natural selection can lead to a population of bacteria becoming resistant to a… (5 marks, Explain)
A population of peppered moths (Biston betularia) lives in a woodland area. Before industr… (5 marks, Explain)
A species of finch lives on an isolated island. The finches feed on seeds found on the gro… (5 marks, Explain)
A population of Arctic foxes lives in a snowy environment. Most Arctic foxes have white fu… (5 marks, Explain)
Explain how a new species can form from a single ancestral population that becomes geograp… (5 marks, Explain)

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