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

(a) sudden creation by nature 

(b) accumulation of variations over several generations 

(c) clones formed during asexual reproduction 

(d) movement of individuals from one habitat to another

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The answer is (b) accumulation of variations over several generations.

  • New species are formed due to variation in the DNA for several generations.
  • Asexual reproduction will not result in variation as there are no gametes involved. ).
    Movement of individuals from one habitat to another will not affect DNA change hence it cannot be right answer

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