Variation in Species
Explain variation within and between species, distinguishing between continuous variation (e.g. height) and discontinuous variation (e.g. blood group), and between genetic and environmental causes
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1858 concepts · 9 subjects
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Practise the bounded task in Variation in Species; see exact limits before inferring broader coverage.
Practise the bounded task in Variation in Species; see exact limits before inferring broader coverage.
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PhET Interactive Simulations · Practice link — not the full lesson
Natural Selection
Before you open · source notes
Natural Selection supports hands-on exploration for Variation in Species. Not every lab worksheet.
Free interactive page, no sign-in required for the tested path.
Before you openAsk the learner what they changed in the sim or page and what they observed.
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Public PhET Interactive Simulations page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
PhET Interactive Simulations. “Natural Selection.” External page; Gakuva does not copy, host, embed, or redistribute materials.
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Check understanding
- Gives examples of continuous and discontinuous variation in humans
- Distinguishes between genetic causes of variation (inherited differences) and environmental causes (diet, sunlight, etc.)
- Explains why sexual reproduction produces greater variation than asexual reproduction
- Draws or interprets a frequency graph showing continuous variation
“If your child looked around a classroom and noticed that everyone has slightly different heights, hair colours, and eye colours, could they explain why these differences exist — and which ones are inherited, which are down to the environment, and which are both?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Ecosystems & Habitats
- Age range
- Ages 12–13
Standards