# Origin of an idea about origins

> Ideas about how species change have developed over the last 200 years. Three main ideas are covered, in the order in which they were proposed: Lamarckism, Darwinism and Punctuated Equilibrium. The…

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## More in EVOLUTION

- [Variation](https://www.hlayiso.com/grade-12/life-sciences/notes/evolution/variation) — Previous section
- [Lamarckism](https://www.hlayiso.com/grade-12/life-sciences/notes/evolution/lamarckism) — Next section
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