Which statement describes the work of Alfred Russel Wallace?
He discovered that DNA is made of two strands that form a double helix.
He developed the theory of natural selection at the same time as Darwin.
He showed that bacteria can evolve resistance to antibiotics over time.
He was the first scientist to find fossils of extinct animals in rocks.
122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.