Natural selection favours those members of a population best suited to an environment.
Rare mutant forms sometimes enjoy a selective advantage if some biotic or abiotic factor brings about a change in the environment making it favour their survival at the expense of their competitors.
The rapid appearance of bacteria resistant to antibiotic is an example of high-speed evolution.
The members of a species form a natural interbreeding group which is reproductively isolated from other species.
The process of speciation depends on barriers to gene exchange dividing a population into two or more separate groups, each of which takes its own course of evolution.
Adaptive radiation is the divergence over a…