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1 Jan 1883 Jahr - August Weismann conducted experiments by breeding mice whose tails had been surgically removed. Because it had no effect on offspring, it challenged the theories of pangenesis and Lamarckism, which held that changes to an organism during its lifetime could be inherited by its descendants.

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ByLizzy Cabbage
11 Okt 2017
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1 Jan 1883 Jahr
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~ 142 years ago
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