Cell theory was a revolution in the evolution of animals on the Earth. It is a very basic theory on which the kingdom of organisms depends because eachorganism, unicellular or multicellular starts with a cell, the basic unit of life.
Theory ofevolution
Change in the hereditary characteristicsgeneration by generation; it was given by CharlesDarwin
Theory ofinheritance
Also known as the Sutton-Boveri theory; itidentifies the importance of chromosomes incarrying genetic inheritance generation togeneration
Theory ofnaturalselection
It is the theory of survival as each organismdepends upon some essential conditions tosurvive and it is the key mechanism of evolutionthrough adaptation.