A model of natural selection
I can use a model of natural selection to make predictions about how a population will change over time.
A model of natural selection
I can use a model of natural selection to make predictions about how a population will change over time.
Lesson details
Key learning points
- A simple model can be used to demonstrate natural selection, e.g. picking up green and white cocktail sticks from grass.
- The model can be used to make predictions about how a population will change over time due to natural selection.
- The prediction may change if the environmental conditions change (e.g. if the grass becomes frosty/snowy).
Common misconception
Thinking that populations of organisms stay the same forever.
This model clearly demonstrates that populations change over time due to natural selection, with advantageous traits (e.g. camouflage) becoming more common in the population.
Keywords
Natural selection - Organisms that are better adapted to their environment are more likely to survive, reproduce and pass on their genes to their offspring.
Model - Scientists use models as simpler representations of complex things and ideas.
Hypothesis - An idea based on observations about how something works.
Prediction - A scientific prediction is a testable statement about a possible outcome of an experiment.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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Starter quiz
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