"A population has been exhibiting genetic equilibrium". Answer the following with regard to the above statement.
(i) Explain the above statement.
(ii) Name the underlying principle.
(iii) List any two factors which would upset the genetic equilibrium of the population.
(iv) Take up any one such factor and explain how the gene pool will change due to that factor

Options

A. Selective mating in small isolated population
B. Nonselective interbreeding in large population
C. Selective mating in large population
D. Nonselective Interbreeding in small isolated population