Lamarck and Evolution

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Lamarck and Evolution

• Darwin paper on natural selection (1858)
• On the Origin of Species (1859)
• Lamarck Zoological Philosophy (1809)
• 1. Phenotypic features could be changed by use
  or disuse.
• 2. These acquired characteristics were passed on
  to offspring.

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Adaptation 2. Giraffe neck size
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Alternative 1. Inheritance of acquired
characteristics Lamark 1809
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Why do giraffes have long necks? Evidence
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• Missing
• The particulate nature of transmission genetics.
• Mendel experimental results published in
  Proceedings of the Brünn Natural History Society
  in 1866.
• Available but unknown.