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प्रश्न
Which one of the following evidences does not support Darwin’s theory of natural selection?
विकल्प
Branching Descent
Small & directional variations
Appearance of new traits by mutations
Survival of the fittest
MCQ
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उत्तर
Appearance of new traits by mutations
Explanation:
Darwin’s theory depends on branching (common) descent and on small, gradual heritable variations acted on by natural selection (survival of the fittest); sudden large changes by mutation (saltation) are a mutationist idea incompatible with Darwin’s original gradualism.
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