Darwin in his 'natural selection theory', did not believed in any role of which one of the following in organic evolution?

Struggle for existence

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Discontinuous variations

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Parasites and predators as natural enemies

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Survival of the fittest

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Solution

The correct option is B Discontinuous variations
Darwin in his 'natural selection theory' did not believe any role of discontinuous variation in organic evolution. According to this theory, organic evolution is a continuous process. The genus of the horse, Equus arose in North America during the Pleistocene epoch and migrated into Eurasia and Africa, where it gave rise to zebras and as well as the modern horse.
Thus, the correct answer is option B.

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