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(B) According to the theory of evolution,speciation occurs when a population of a species becomes reproductively isolated from the original population

Vedclass · Accepted Answer

accumulation of variations over several generations

Vedclass · Answer

(B) According to the theory of evolution,speciation occurs when a population of a species becomes reproductively isolated from the original population.This process is driven by the gradual accumulation of genetic variations (mutations and recombination) over many generations.As these variations accumulate,the population undergoes significant changes in its genetic makeup,eventually leading to the formation of a new species that can no longer interbreed with the ancestral population.Therefore,the correct answer is the accumulation of variations over several generations.

According to the evolutionary theory,the formation of a new species is generally due to:

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