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Mutation is a large difference arising suddenly in a population.

Darwinian variations are small, gradual and directionless.

Branching descent and natural selection are the two key concepts of Darwinism.

Fitness is the end result of the ability to adapt and get selected by nature.

answer is B.

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Detailed Solution

Darwinian variations are small and directional. Evolution for Darwin was gradual while de Vries believed mutation caused speciation and hence called it saltation (single step large mutation).

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