Therory of natural selection dwells on

Options

A. role of eniroment in evolution
B. natural selection acting on favourable variations
C. changes in gene complex resulting in heritable variations
D. None of the above

Answer

B

Explanation

According to Darwin's theory of natural selection, in the struggle for existence, only those individuals survive which possess the most useful variations.
Useful variations present in the survivmg individuals are passed on to the next generation. Next generation repeats the process of development of variations and natural selection