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6 Cards in this Set
- Front
- Back
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2 concepts Darwin discovered: |
1. All life has evolved from a common ancestor 2. Adaptation is due to Natural Selection |
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Important points from Darwin's journey of the Beagle: |
1. Darwin discovered a variety of fossils and began to realise species could become extinct. 2. Finches- variation in beak shape and size was an adaptation to the environment (food) 3. Large variety of species was discovered |
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What did Darwin discover after reading Thomas Malthus's essay; An essay on the principle of population |
Competitionand non-random survival; how well a species is adapted in its environment willpredict its survival. |
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Darwin’s 4 Posits forNatural Selection to operate: |
1.Individuals within a species are variable 2.Variation is heritable 3.Every generation more individuals are producedthan survive 4.Competition, so survival is not random So:More favoured forms in the variation will survive. |
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What was a major problem in Darwin's theory? |
The lackof a mechanism to explain natural selection. |
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Modern Synthesis |
Darwin's theory supported by genetics is called this. |
