A rare tortoise species survives in three protected areas. A conservation programme includes parent tortoises from all three areas. Years later, a new disease spreads through the population. How could the original choice of parents help the population?
It increases the chance that some tortoises have an inherited characteristic that is advantageous when the disease spreads.
It increases the chance that changes acquired by adult tortoises are inherited by their offspring.
It increases the chance that ill tortoises develop a useful mutation because they need to survive.
It increases the chance that all tortoises inherit the same combination of alleles from their parents.
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.