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Updated: 10/7/2020
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  • Hi Toffee!
  • Hi Vale! Did you know all about the lesson that ma’am caluna discussed yesterday? I didn’t attend class yesteray due to my sickness.
  • Yes, It’s my plessure to share with you the lesson and it’s all about pre-darwinian theories of change
  • So can you please share to me the lesson that ma’am caluna discussed?
  • Oh, this person is more on specific organs of related animals that have a structural variations.
  • Empedocles and Aristotle, Georges Louis-Buffon, Erasmus Darwin and Jean Baptiste Lamarck
  • Pre-darwinian theories of change is an ideas about evolutionary change.
  • Thank you so much! I will listen to you
  • Empedocles has four element theory proved to be remarkably long-lived. About a century after Empedocles devised it, Aristotle popularized and added to it.
  • Empedocles’ four elements came to be known as the Aristotelian Elements.
  • First, the philosophers Empedocles (495-435 B.C) and Aristotle (384-322 B.C) described concepts of change in living organisms over time.
  • Hmmmm that’s why the four elements called as the Aristotelian Elements.
  • He believed in a special creation of species and considered change as being degenerate.
  • Second, Georges-Louis Buffon (1707-1788 )
  • His observation of structural variations in particular organs of related animals convinced him that change must have occurred during history of life on earth.
  • He believed in the common ancestry of all organisms.
  • Third, Erasmus Darwin (1731-1802).A physician and the grandfather of Charles Darwin. He was intensely interested in questions of origin and change.
  • Okay I get it, Next is?
  • Lamarck’s acceptance of a theory of inheritance that we now know is not correct led him to erroneous conclusions about how evolution occurs.
  • Lastly, Jean Baptiste Lamarck (1744-1829) A distinguished French zoologist.
  • His contributions to zoology include important studies of animal classification and his theory was based on a widely accepted theory of inheritance that organisms develop new organs, or modify existing organs, as needs arise.
  • Vale, Thank you for sharing this lesson to me. It really helps me a lot.
  • So that’s why It called the Pre-darwinian theories of change.
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