Assertion (A): Speciation is the process of formation of a new species from a pre-existing one.

Reason (R): Mutation plays a role in speciation.



Speciation is the process of formation of new species from pre-existing ones. 

Factors which can lead to speciation are:  

  1. Genetic drift  
  2. Mutation/ Drastic change in the genes or DNA  
  3. Natural selection  
  4. Geographical isolation 


  • The assertion is true.
  • The reason is true.

So, the correct answer is (a).

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo