ScienceEcosystems & HabitatsAges 12–14
How Natural Selection Works
Explain natural selection as the mechanism of evolution: heritable variation + competition for resources + differential survival and reproduction = change in allele frequency over generations
Learning resources
Reviewed external links that reinforce this concept. They do not replace Gakuva’s teaching approach.
No reviewed resources for this concept yet.
The teaching approach above still stands. Curated practice links will appear here as the shelf fills.
Explore the learning path
6 before · 2 after
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Before
This concept
How Natural Selection WorksConceptual concept
Check understanding
- Describes the four conditions required for natural selection to operate (variation, heritability, competition, selection)
- Applies the concept to a specific example (e.g. antibiotic resistance in bacteria, peppered moth)
- Explains why individuals with advantageous traits leave more offspring
- Distinguishes natural selection from evolution (selection is the mechanism; evolution is the result over many generations)
“If your child heard about bacteria becoming resistant to antibiotics, could they explain how that happened using natural selection — without the bacteria ‘choosing’ to change?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Ecosystems & Habitats
- Age range
- Ages 12–14
Standards
ngss-ms:MS-LS4-4uk-nc-2013:KS3.Sci.Bio.Adaptation.1uk-nc-2013:KS3.Sci.Bio.Adaptation.4