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Question

Weismann cut off the tails of mice generation after generation, but tails neither disappeared nor shortened, proving that acquired characters are not inherited. 


A
True
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B
False
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Solution

The correct option is A True
Lamarckism explained the inheritance of acquired characteristics. According to him, characteristics acquired during the lifetime of an organism are inherited by the successive generations. This theory was proved wrong by August Weismann.  Weismann proved this by cutting off the tails of mice for as many as 22 generations, and allowing them to breed. He observed that tailless mice were never born.

Biology

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