Q.Match the following. Column I: 1. August Weismann, 2. Hugo de Vries, 3. Charles Darwin, 4. Lamarck. Column II: a. Mutation theory, b. Germplasm theory, c. Theory of natural selection, d. Theory of inheritance of acquired characters.
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Start your 14-day free trial to unlock the full solution →1-b, 2-a, 3-c, 4-d: Weismann proposed the germplasm theory, de Vries the mutation theory, Darwin natural selection, and Lamarck acquired characters.
Step 1. August Weismann's tail-docking experiment on rats disproved Lamarck's theory and led him to propose that only germ-cell (germplasm) variation is inherited — the Theory of Continuity of the Germplasm — so 1 matches b.
Step 2. Hugo de Vries, studying the evening primrose, proposed that evolution proceeds through large, sudden, random changes he called mutations — the Mutation theory — so 2 matches a.
Step 3. Charles Darwin, based on his voyage observations and the influence of Lyell and Malthus, proposed that favourable variations are preserved by nature — the theory of natural selection — so 3 matches c. …
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