Question

10. 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)​

Answer 1

New species may be formed if DNA undergoes significant changes in germ cells and Chromosome number changes in the gamete.

If DNA undergoes changes in germ cells that will cause mutations and if chromosome number changes in the gamete it will lead to lethal consequences; both of these changes will lead to formation of new species