1. 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) (i), (ii) and (iii)

ScienceClass 10CBSEAnswered 27 Mar 2026

Answer

Soln:

The answer is (a) (i) and (ii)

Explanation:

Evolution will not take place without change and variation in the genetic material. Hence, the change in genetic material and variation in chromosomes are required for the evolution of new species.

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1. 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) (i), (ii) and (iii)

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