biology unit 1- evolution
- Created by: safia rassool
- Created on: 16-05-16 14:40
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Theories of evolution
- life on earth began 3billion years ago
- JEAN BAPTISE LAMARCK- characteristics developed through persons life time can be passed onto offspring e.g. muscle- NO
- CHARLES DARWIN- natural selection, small changes in organisms took placeover a very long time, those that are best adapted breed and pass on good survival characteristics e.g birds adapting beaks- YES
- nobody believed him because nobody knew about genes, everybody believed God made everything on earth
- MUTATION---VARIATION---ADAPTATION---SURVIVAL---BREED---NS
- mutations change genes…
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