Science at key stage 3 (Year 9)
Unit 9A: Inheritance and selection
Section 4: b. How do differences between offspring with the same parents compare with differences between offspring of different parents?
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Objectives |
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- that variations can arise from environmental differences
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Activities |
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Outcomes |
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Children: |
- Remind pupils of the earlier discussion on twins and of the results of the previous investigation. Challenge pupils to explain why there is variation between individuals with identical or very similar genetic information and to list environmental factors that may lead to variation.
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- identify some characteristics that are influenced by environmental factors
- identify environmental factors that influence characteristics of an individual
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Points to note |
- Pupils sometimes think that variation arises for either environmental or genetic reasons. They may need help to see that some characteristics,
eg height, may be influenced by both. It may also be helpful to establish that environmental differences do not alter an individual's genes.
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This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
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