Q.66 Discuss natural selection and artificial selection. What are the implications of the latter on

the process of evolution?

Natural selection is a gradual, non-random process by which biological traits become

either more or less common in a population as a function of differential reproduction of

their bearers. Itis a key mechanism to evolution.

Jn natural selection the environment acts as a sieve through which only certain variations can

pass.

Avtifcial selection is a process in which animals and plants with desirable traits are

considered by human breeders and favoured for reproduction. It is an artificial mechanism

by which evolution can ocour.

It is also called selective breeding as it promotes traits that suit human preferences, In

contrast to natural selection, here the evolution is intentional or guided.