Question

New species may formed if
(i) DNA undergoes significant change in germ cells
(ii) Chromosome number changes in the gamete
(iii) There is no change in the genetic material
(iv) Mating does not takes place

• A. (i) and (ii)
• B. (i) and (iii)
• C. (ii), (iii) and (iv)
• D. (i), (ii) and (iii)

Answer 1

The correct option is A (i) and (ii)

New species may be formed if DNA undergoes significant change in germ cells. Changes in DNA will be inherited by the germ cells. Germ cells which when passes to the next generation will be inherited in the subsequent generations.

Change in the chromosome number makes a change in the gametes which leads to change in the gene pool and causes variation. So, the correct answer is option A.