GCSE Biology Specification

OCR A J247

Section B5.2: Natural selection and evolution

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#B5.2a

state that there is usually extensive genetic variation within a population of a species

#B5.2b

describe the impact of developments in biology on classification systems

natural and artificial classification systems and use of molecular phylogenetics based on DNA sequencing

#B5.2c

explain how evolution occurs through the natural selection of variants that have given rise to phenotypes best suited to their environment

the concept of mutation

#B5.2d

describe evolution as a change in the inherited characteristics of a population over time, through a process of natural selection, which may result in the formation of new species

#B5.2e

describe the evidence for evolution

fossils and antibiotic resistance in bacteria

#B5.2f

describe the work of Darwin and Wallace in the development of the theory of evolution by natural selection and explain the impact of these ideas on modern biology

seedbanks being used as a store of biodiversity