Define the term ‘Evolution’. “Evolution cannot be equated with progress”. Justify.
The process by which the new types of organisms are formed from the pre-existing organisms through variations and modifications is called evolution. Natural selection and genetic drift cause evolution but that does not mean that One species is eliminated to form the new one, or The new species is better than the older one. So, evolution should not be equated with progress as multiple branches are possible at each and every stage of evolution. Example: Human beings have not evolved from chimpanzees. Both have evolved in their own separate ways from a common ancestor a long time ago.