Zoology - Evolution Question with Solution | TestHub
In a famous experiment, A. Weismann cut off tails of new-born mice, generation after generation. At the end of the experiment, tails of mice neither disappeared nor shortened. This experiment:
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Lamarck gave the theory of inheritance of acquired characteristics wherein the organism can pass on the physical characteristics acquired during its lifetime via use and disuse to its offspring. Hence, the giraffe has a long neck due to the regular use of stretching the neck to reach the leaves at the top part of the plant/tree. This theory was rejected by August Weismann where he experimented by cutting the tails of mice at each new generation. But found that, every new generation formed from the tail-less acquired parent had a tail in them. Weisman developed the theory of inheritance where the germ-plasm remained intact without change from the main body and that is passed to the next generation.
