Weismann's experiment of cutting rat tails for 21 generations disproved the theory of:
ADarwinism
BLamarckism (inheritance of acquired characters)
CMutation theory
DModern synthesis
Answer & Solution
Correct answer: B. Lamarckism (inheritance of acquired characters)
Weismann cut tails of rats for 21 successive generations; tail length never decreased. He concluded somatic changes (somatoplasm) are NOT inherited — only germ-line (germplasm) changes pass to offspring. This refuted Lamarck's inheritance of acquired characters.
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