A population of flowering plants grows in an area where the soil often becomes dry. The plants have inherited differences in leaf thickness. During dry periods, plants with thicker leaves are more likely to survive and produce seeds.
Give the term used for differences in characteristics between individuals of the same species.
The first event in natural selection is shown.
Individuals in the population have different leaf thicknesses.
The next three events are:
A Alleles for thicker leaves become more common in the population.
B Plants with thicker leaves survive dry periods and produce more seeds.
C Offspring inherit alleles for thicker leaves from the plants that produced the seeds.
Give the order of A, B and C.
71 exam-style questions on AQA GCSE Biology 6.3 The development of understanding of genetics and evolution, covering 6.3.1 Theory of evolution, 6.3.2 Speciation, 6.3.3 The understanding of genetics, 6.3.4 Evidence for evolution, 6.3.5 Fossils, 6.3.6 Extinction, and 6.3.7 Resistant bacteria. Each one has a worked solution and a mark scheme showing where the marks go.