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Unit 3

Unit 3. Designer Animals. Artificial and natural selection - Darwin’s pigeons: Unit 3. Similarities. Differences. What type of animal are they?. Artificial and natural selection - Darwin’s pigeons: Unit 3. Pigeons!. Artificial and natural selection - Darwin’s pigeons: Unit 3.

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Unit 3

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  1. Unit 3 Designer Animals Artificial and natural selection - Darwin’s pigeons: Unit 3

  2. Similarities • Differences What type of animal are they? Artificial and natural selection - Darwin’s pigeons: Unit 3

  3. Pigeons! Artificial and natural selection - Darwin’s pigeons: Unit 3

  4. Pigeon feather colour Artificial and natural selection - Darwin’s pigeons: Unit 3 Darwin’s ways of working: Unit 1

  5. Pigeon beaks Artificial and natural selection - Darwin’s pigeons: Unit 3 Darwin’s ways of working: Unit 1

  6. Pigeon crops Pigeon’s crop Artificial and natural selection - Darwin’s pigeons: Unit 3 Darwin’s ways of working: Unit 1

  7. Charles Darwin 1809 -1882 Artificial and natural selection - Darwin’s pigeons: Unit 3

  8. Charles Darwin the pigeon breeder Artificial and natural selection - Darwin’s pigeons: Unit 3

  9. “…I do not believe that any ornithologist would place the English carrier, the short-faced tumbler, the runt, the barb, pouter, and fantail in the same genus…” Darwin knew they were all the same species but they look so different that they could be mistaken for totally unrelated birds. Artificial and natural selection - Darwin’s pigeons: Unit 3

  10. Wild pigeon (rock dove) to fantail Artificial and natural selection - Darwin’s pigeons: Unit 3

  11. ! Many, many years pass …. Breeding cycles Mr Jones breeds pigeons. One day a pair are mated… And lay eggs. Mr Jones notices that one baby pigeon has extra tail feathers. He would like more pigeons with extra tail feathers so he decides to breed from this unusual pigeon. He does this many times, breeding more and more birds with extra tail feathers, always choosing those with the most feathers to breed again. He gives some of these birds to other breeders who breed them in the same way. After a very long time the magnificent fantail pigeon is produced.

  12. A A C A B B B C C D E F E D F E D F Table 1

  13. Table 2

  14. ‘Although man does not cause variability and cannot even prevent it, he can select, preserve, and accumulate the variations given to him by the hand of nature in any way which he chooses; and thus he can certainly produce a great result.’ Charles Darwin Referring to your learning today re-write this quote in your own words. Artificial and natural selection - Darwin’s pigeons: Unit 3

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