. New species may be formed if


(i) DNA undergoes significant changes in germ cells
 
(ii) chromosome number changes in the gamete
 
(iii) there is no change in the genetic material
 
(iv) mating does not take place
 
(a) (i) and (ii)
 
(b) (i) and (iii)
 
(c) (ii), (iii) and (iv)
 
(d) (i), (ii) and (iii)

Best Answer

Answer: (a) (i) and (ii)

Explanation:
 
Evolution will not take place without change and variation the genetic material. Hence change in genetic material and variation in chromosome is required for the evolution of new species.

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