AQA spec link: 188.8.131.52 + 184.108.40.206
Relevant chapter: B13 Variation and evolution. AQA Biology trilogy edition textbook-Page 180-181.
Students are required to know the following;
Students should be able to:
• state that there is usually extensive genetic variation within a population of a species
• recall that all variants arise from mutations and that: most have no effect on the phenotype; some influence phenotype; very few determine phenotype.
Mutations occur continuously. Very rarely a mutation will lead to a new phenotype. If the new phenotype is suited to an environmental change it can lead to a relatively rapid change in the species.
Students should be able to 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 a new species.
The theory of evolution by natural selection states that all species of living things have evolved from simple life forms that first developed more than three billion years ago.
Students should be able to explain how evolution occurs through natural selection of variants that give rise to phenotypes best suited to their environment.
If two populations of one species become so different in phenotype that they can no longer interbreed to produce fertile offspring they have formed two new species.
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AQA new specification-B13 Variation and evolution-Combined/Additional science bundle
This bundle only contains the content for COMBINED/ADDITIONAL science students. It includes the B13 unit-Variation and evolution. All lessons have been done in accordance to the specification requirements and have been pitched to a higher ability class. Videos have been embedded for ease of use, and printer friendly resources attached. Search the individual lessons for more information on the lesson content. Save 20% by purchasing this bundle :) Total = 5 lessons These lessons are suitable to teach separate science but they have 3 extra topics to learn. Lesson 1-Variation Lesson 2-Evolution by natural selection Lesson 3-Selective breeding Lesson 4-Genetic engineering Lesson 5-Ethics of genetic technologies Good luck with your lessons :)
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