Cambridge AS & A Level Biology
17Selection and evolution
Selection and evolution in Cambridge AS & A Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Topic128 practice questions6 lessons
In this topic
Lessons
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Comparing two means with the t-test
40 min
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Variation: genes, environment and the two types of variation
35 min
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Allele frequencies: genetic drift, bottlenecks and the Hardy-Weinberg principle
40 min
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Artificial selection: breeding crops and livestock
35 min
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Natural selection: stabilising, directional and disruptive
40 min
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Evolution and the formation of new species
40 min
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