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(D) August Weismann performed an experiment where he cut off the tails of mice for $22$ generations. He observed that the offspring were still born wi

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Lamarckism - the inheritance of acquired characters was incorrect.

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(D) August Weismann performed an experiment where he cut off the tails of mice for $22$ generations. He observed that the offspring were still born with tails of normal length. This experiment provided evidence against the theory of 'Inheritance of Acquired Characters' proposed by Jean-Baptiste Lamarck. Lamarck believed that traits acquired during an organism's lifetime could be passed on to the next generation. Weismann's experiment demonstrated that somatic changes (changes in body cells) are not inherited,as only changes in germ cells (gametes) are passed to the offspring.

Weismann cut off the tails of mice for several generations. However,the tail did not disappear or become shorter,which shows that ...........

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