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Q.

Mark the incorrect statement.

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a

Mutation is a large difference arising suddenly in a population.

b

Darwinian variations are small, gradual and directionless.

c

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

d

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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Mark the incorrect statement.