Evolution

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  • Created by: naomi2310
  • Created on: 05-01-15 20:03

1. Describe how evolution can occur due to mutations.

  • A mutation is a change in an organisms DNA, occasionally they can be beneficial by producing a useful characteristic. this characteristic may give the organism a better chance of surviving and reproducing.
  • A mutation is a broken DNA, occasionally they can be beneficial by producing a useful characteristic. this characteristic may give the organism a better chance of surviving and reproducing.
  • MRSA is an example. A mutation which has accumulated in a population.
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2. How did the discovery of genetics support Darwin's idea.

  • Religion finally corresponded with the idea.
  • Showed how genetic mutation can result in natural selection.
  • It provided an explanation of how organisms born with beneficial characteristics can pass them on.
  • The idea of MRSA suggested that evolution can occur due to mutations.

3. What was Lamarck's theory? Why wasn't it accepted?

  • If a characteristic was used a lot by an organism, it would be passed onto the next generation.
  • That if a characteristic was used a lot by an organism, it would become more developed during it's lifetime e.g rabbit's legs. He believed these characteristics would be passed on to the next generation. But experiments didn't support it.
  • Although experiments supported Lamarck's theory that characteristics developed during an organisms' lifetime, religion didn't support the idea.

4. Why didn't everyone agree with Darwin?

  • Because it was against ancestral beliefs, Darwin couldn't explain himself, There wasn't enough evidence.
  • Because it was against common religious beliefs, Lamarck couldn't explain himself, There wasn't enough evidence.
  • Because it was against common religious beliefs, Darwin couldn't explain himself, There wasn't enough evidence.
  • Because it was against common religious beliefs, Darwin couldn't prove with an experiment, There wasn't enough data/information

5. Describe the theory of natural selection.

  • Individuals within a species show variation because of the differences in their genes. Individuals with characteristics that make them better adapted are more likely to survive and breed succesfully.
  • Genes that are responsible for the useful characteristics are more likely to be passed on to the next generation.
  • Individuals within a species show variation because of evolution of the species.
  • The habitat in which a species lives in determines how succesful breeding will be within the species.

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