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6 Cards in this Set
- Front
- Back
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Sum up the theory of natural selection |
- variation within species - competition for limited resources between offspring - survival of the fittest - those that survive pass on their genes |
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How do (overtime) the changes produced by natural selection result in new species? |
- only happens when they can't mate for a long time - maybe by living in different areas (geographical isolation) or behavioural isolation - may evolve differently to become to different species |
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Why is natural selection difficult to study? |
It takes thousands of years to see an effect |
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2 examples of natural selection: - more bacteria are developing resistance to antibodies |
- more dark peppered moths are surviving in polluted areas as they are camouflaged |
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Why did people disagree with Darwins theory at first? |
Not enough evidence Destroys all theories know of god |
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What was lamaracks theory? Why has it been stated in |
The use of acquired characteristics such as giraffes have long necks to eat |
