Which of the following is a key feature of a natural classification system?
It groups organisms solely based on one easily observable physical feature, such as colour.
It is based on evolutionary relationships and shared ancestry between organisms.
It relies entirely on where an organism lives rather than its anatomy.
It does not use genetic information or molecular evidence like DNA sequences.
38 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.