Question

Choose the correct statements with reference to mutation theory :
(a) Mutations occur from time to time in naturally breeding population.
(b) Mutations are continuous and accumulate over generations.
(c) Mutations are full fledged and there are no intermediate forms.
(d) Mutations are not subjected to natural selection.

• A. (b) and (c)
• B. (a) and (b)
• C. (c) and (d)
• D. (a) and (c)

Answer 1

The correct option is D (a) and (c)

Mutations occur frequently in organisms though most of them are neutral. Mutation either results in certain change within a gene or it does not. There is no intermediate forms.

Mutations are discontinuous and do not necessarily accumulate over generations. As mutations might result in conditions that are either beneficial for the survival of an organism or harmful for it, hence they are subjected to natural selection.

So, the correct answer is '(a) and (c)'