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State and describe in brief any three main factors responsible for the rise of a new species.

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Factors responsible for rise of a new species are :

(i) Genetic drift: Over a generation, genetic drift may accumulate which lead to the formation of a new species.

(ii) Natural selection: Due to natural selection, variation may occur which lead to the formation of a new species.

(iii) DNA change: Variation during DNA copying often lead to the formation of a new species.

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