In biology, essentialism is the idea that all organisms and species were unchanging throughout time. Up until Darwin’s Origin of Species, the prevailing view on biological species was that all organisms were made without accident and would never change. Essentialism also promoted the idea that all organisms that had lived on the earth were currently there; species neither evolved nor underwent extinction (Marshall, 2015). Nearly every modern scientist views this as an incorrect assessment of biology, and that organisms on the planet are constantly changing and evolving. It took many years for evolution to become the prevalent thought process, however. It is through this fight against essentialism and towards evolution that it has given evolution