Jean Baptiste LamarckJean proposed Inheritance of Acquired Characteristics also known as the theory of use-disuse. If an organism uses a structure a lot and so do its ancestors, over time that structure will develop better, like giraffes. Was the first person to propose a mechanism for evolution although it was later proven wrong.(1 August 1744 – 18 December 1829)
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Alfred Russel WallaceAlfred sailed to South America and formed the same theory as Darwin did. Although sadly his boat sank on the return trip with all his evidence on it. He presented what he had learned to Darwin who then was only credited because he had the evidence. (8 January 1823 – 7 November 1913)
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