alleryWeismann'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.
Keep practising Unit 5C: Non-Mendelian Genetics & Population Transmission
Browse all Unit 5C: Non-Mendelian Genetics & Population Transmission questions for AP Biology, or explore more Biology topics.
Related questions
Which of the following is **not** a stop codon?The semiconservative nature of DNA replication was experimentally proved by:The F₂ **genotypic** ratio in Mendel's monohybrid cross is:In Mendel's monohybrid cross between true-breeding tall (TT) and dwarf (tt) plants, the F₂Mendel conducted his hybridisation experiments on which plant?In the Watson-Crick double helix, adenine pairs with thymine via how many hydrogen bonds?In birds, the sex-determination mechanism is:Down syndrome in humans is caused by